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ACCEPTANCE TESTING

SOFTWARE TESTING

The acceptance testing of software application is an important software testing level. The software testing is conducted at the different levels of software development by the different members of the IT project team and stakeholders. At each level, the test objective is different. The different levels of software testing are: unit or component testing, integration testing, system testing and acceptance testing.

The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:

  • user acceptance testing
  • operational acceptance testing
  • contractual and regulatory acceptance testing
  • business acceptance testing

User acceptance testing:

User acceptance testing is performed by the intended users of the software to check if the system meets their expectations. the user friendliness and completeness of the software application is tested. UAT can be either alpha testing or beta testing. It is also called as application testing or end-user testing.

Operational acceptance testing:

Operation acceptance testing is performed by the system administrators to ensure the system works properly in the operational environment of the client.

Contractual and regulatory acceptance testing:

Contractual acceptance testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client.

Regulatory acceptance testing is performed by users and software testers to ensure the software is compliant with government, legal or safety standards.

Business acceptance testing:

Business acceptance testing is performed within the development organisation by the vendor to guarantee that the system will eventually pass the User acceptance testing.

The software applications are subjected to various levels of acceptance testing to build the confidence of the IT team and stakeholders, in the system.

Acceptance testing is also called as formal testing with respect to the user needs and requirements and business processes conducted to decide whether or not the system satisfies the acceptance criteria. Acceptance testing enables the user, customers or other authorised entity to decide whether to accept or to not accept the system.

Acceptance testing uses the black box testing technique and is executed manually. Acceptance testing is done after system testing and also before making the system available in production for actual use. 

Types of acceptance testing are:

  1. Internal acceptance testing- which can be called as alpha testing is performed by members of the organisation, that developed the software but who cannot be directly involved in the project.
  2. External acceptance testing- This type of testing is done by people who wouldn’t be the staff of the organisation that developed the software.
  3. Customer acceptance testing- this type of acceptance testing is done by the customers of the organisation that developed the software. They are ones who asked the organisation to develop the software.
  4. User acceptance testing- this type of testing is also called as beta testing which is performed by the customers or end users.

Acceptance Testing

Use of acceptance testing

  1. To find the defects missed during the functional testing phase.
  2. How well the product will be developed.
  3. A product is what actually the customers need.
  4. A feedback helps in improving the product performance and user experience.
  5. Minimise the issues arising from production.

Steps to perform acceptance testing:

Requirement analysis– the testing team analyses requirement document to find the out the of purpose of the developed software. Test planning is done using requirement document, process flow diagrams, system requirement specification etc.

Test plan creation– test creation outlines the complete strategy of the testing process. This strategy is used to make sure and verify whether the software is conforming specified requirements or not.

Test case Designing– This step has execution of test cases by using appropriate input values. This testing team gathers input value from the end user then all test cases are executed by both tester and end user to make sure the software is working correctly or not.

How to start user acceptance testing?

User acceptance testing is necessarily done at the end of the software development life cycle. That means that the developed software must be largely feature complete.

The project team defines a UAT plan right at the beginning of a project; it executes the UAT test cases.

Let us consider the example, as we got recruited by some abc company to do the UAT testing. They had a development team approached us to check if the developed archiving feature actually works for the user.

  1. UAT scope- as we are in charge to test the newly developed archive feature of the software, we define the series of features we want to test. As we can see the test example focuses on the desktop tests only while the mobile tests are not included.
  2. UAT assumptions and constraints

For the test suite example of testing archiving feature on the desktop, constraints are often the OS to be used and specific browser versions and that we must clearly state the assumptions like how the tester handles the error reporting.

3. UAT risks

UAT test case example: UAT risks planning

In our example we can face some risks during the UAT

Not properly trained UAT testers, incomplete UAT environment, error handling, UAT test failure.

4.UAT team roles and responsibilities

The UAT team will assure

That defined test cases are planned and conducted accordingly. The test results are documented and shared among the project team.

5.UAT entry criteria

To start the UAT, archiving feature the following must be the criteria.

The development of the archive feature is fully completed. All reported bugs are fixed. The UAT test environment is available and testers are trained to start the UAT test

  • the development of the archive feature in abc software is completed
  • integration tests are completed
  • no high or medium defects are reported
  • all reported bugs should be fixed
  • UAT test environment(hardware, software, location) is ready
  • testers got briefed and ready to start testing
  • UAT test plan is available

6. UAT requirement- based test cases

As the user acceptance looks to verify if the business and user requirements are met, test case procedure could look like

  1. please visit: abc.com
  2. log in with the following credentials

 username: nancy

  password: 123

  1. open available abc board
  2. archive the first card on board.

Expected results

The card will be removed

The card will be moved to archive.

Check your understanding:

  1. List the different types of acceptance testing listed in above article.
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  1. Different types of acceptance testing:
    1. User acceptance testing: Performed by the intended users of the software to check if the system meets their expectations. It can be either alpha testing or beta testing.
    2. Operational acceptance testing: Performed by the system administrators to ensure that the system works properly in the operational environment of the client.
    3. Contractual acceptance testing:
    Performed by the users and software testers to ensure that the software meets the contractual requirements of the client.
    4. Regulatory acceptance testing: Performed by the users and software testers to ensure that the software is compliant with government, legal and security standards.
    5. Businesses acceptance testing: Performed within the development organisation by the vendor to guarantee that the system will eventually pass the user acceptance testing.

  2. Types of User Acceptance Testing:
    1. UAT (User Acceptance Testing)- performed by the end user to check if software meets their expectations.Checks for user friendliness and if whole system works as it should be.
    2. Operational acceptance testing – this is performed by the Sys Admin to ensure the system works properly in the operational realm. Sys Admin has more knowledge when it comes to technicality .
    3. Contractual and Regulatory Testing: performed by the users and software testers to check if it meets the contractual agreement r requirements from the client and Regulatory is performed to check if it complies with the regulatory part of it.
    4. Business Acceptance testing: performed within the development organizatio by the vendor to guarantee that software apps will pass at UAT.

  3. 1: user acceptance testing
    2: operation acceptance testing
    3:contractual and regulatory acceptance testing
    4:business acceptance testing

  4. • User acceptance testing:
    – User acceptance testing is performed by the intended users of the software to check if the system meets their expectations. the user friendliness and completeness of the software application is tested. UAT can be either alpha testing or beta testing. It is also called as application testing or end-user testing.

    • Operational acceptance testing:
    – Operation acceptance testing is performed by the system administrators to ensure the system works properly in the operational environment of the client.
    • Contractual and regulatory acceptance testing:
    – Contractual acceptance testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client.

    – Regulatory acceptance testing is performed by users and software testers to ensure the software is compliant with government, legal or safety standards.

    • Business acceptance testing:
    – Business acceptance testing is performed within the development organization by the vendor to guarantee that the system will eventually pass the User acceptance testing.
    – The software applications are subjected to various levels of acceptance testing to build the confidence of the IT team and stakeholders, in the system.

  5. Acceptance testing is performed to check the acceptance criteria of the product. The different types of acceptance testing are:
    – User acceptance testing: it is performed by the intended users to check if the product meets their expectations. Tests user friendliness and completeness of product. It is of 2 types- alpha and beta testing.
    – operational acceptance testing: it is performed by system administrators to check if the software is working proper in the operational environment of the client.
    – contractual or regulatory acceptance testing: done by clients and software testers to ensure software meets government, legal and safety standards.
    – business acceptance testing: it is performed within the developmental organization to guarantee the system passes user acceptance testing.

  6. The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:
    •user acceptance testing
    •operational acceptance testing
    •contractual and regulatory acceptance testing
    •business acceptance testing

  7. Different types of acceptance testing:-
    1. User acceptance testing:- Performed by the intended users of the software to check if the system meets their expectations. It
    can be either alpha testing or beta testing.
    2. Operational acceptance testing-: Performed by the system administrators to ensure that the system works properly in the
    operational environment of the client.
    3. Contractual acceptance testing:-Performed by the users and software testers to ensure that the software meets the
    contractual requirements of the client.
    4. Regulatory acceptance testing-: Performed by the users and software testers to ensure that the software is compliant with government, legal and security standards.
    5. Businesses acceptance testing:- Performed within the development organisation by the vendor to guarantee that the system will eventually pass the user acceptance testing.

  8. Types of acceptance testing:
    user acceptance testing
    operational acceptance testing
    contractual and regulatory acceptance testing
    business acceptance testing…

  9. 1. User acceptance testing-is performed by client to check if the system meets their expectations. UAT can be either alpha testing or beta testing. It is also called as application testing or end-user testing.
    2. Operational acceptance testing- is performed by the system administrators to ensure the system works properly in the operational environment of the client.
    3. Contractual and Regulatory acceptance testing- Contractual testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client. Regulatory acceptance testing is performed by users and software testers to ensure the software is compliant with government, legal or safety standards.
    4. Business acceptance testing-is performed within the development organization by the vendor to guarantee that the system will eventually pass the User acceptance testing.

  10. user acceptance testing is also called as application testing or end user testing.it is performed by the end users to check if the system meets their expectations.
    Operation acceptance testing is performed by the system administrators to ensure the system works properly in the operational environment of the client.
    Contractual acceptance testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client.
    Regulatory acceptance testing is performed by users and software testers to ensure the software is compliant with government, legal or safety standards.
    Business acceptance testing is performed within the development organisation by the vendor to guarantee that the system will eventually pass the User acceptance testing.

  11. There are various types of acceptance testing:

    user acceptance testing
    operational acceptance testing
    contractual and regulatory acceptance testing
    business acceptance testing

  12. Types of acceptance testing:
    user acceptance testing
    operational acceptance testing
    contractual and regulatory acceptance testing
    business acceptance testing

  13. There are various types of acceptance testing:
    •user acceptance testing
    •operational acceptance testing
    •contractual and regulatory acceptance testing
    •business acceptance testing

  14. Different types of acceptance testing are:
    A. User Acceptance Testing (UAT)
    B. Operational Acceptance Testing
    C. Contractual and Regulatory Acceptance Testing
    D. Business Acceptance Testing

    A. UAT is done by the intended users of the software to check if the system meets their expectations. The user friendliness and completeness of the software application is tested. UAT can be Alpa or beta. UAT is also called Application testing or end user testing.

    B. Operational Acceptance Testing is performed by the system administrators to ensure the system works properly on the operational environment of the client.

    C. Contractual and Regulatory Acceptance Testing :
    There are 2 parts of this:
    Contractual Testing is performed by the users and software testers to ensure that the s/w meets the contractual requirements of the client.
    Regulatory acceptance testing is performed by users and software testers to ensure the s/w is compliant with government, legal and safety standards.

    D. Business Acceptance Testing is performed within the development organization by the vendor to guarantee that the system will eventually pass the UAT.
    The s/w applications are subjected to various levels of acceptance testing to build the confidence of the IT team and stakeholders in the system.

  15. The different types of acceptance testing are:
    – UAT user acceptance testing
    – operational acceptance testing
    – contractual and regulatory acceptance testing
    – business acceptance testing

  16. The different types of acceptance testing are:
    1. User acceptance testing
    2.Operational acceptance testing
    3.Contractual and regulatory acceptance testing
    4.Business acceptance testing

  17. The different types of user acceptance testing are as follows:
    User Acceptance Testing:In it software is checked if the system meets there expectation,the user friendliness and completeness of the software.There is two types of UAT,one is alpha and other is beta testing.
    Operational Acceptance Testing:It is done by the system administrator to see the system works or not.
    Contractual and Regulatory Acceptance:It is performed by the user and tester to ensure software meets the requirement of the client.
    Business Acceptance Testing:It is done within organization by vendor to guarantee the system will eventually pass UAT.

  18. 1. User acceptance testing
    2. Operational acceptance testing
    3. Contractual and regulatory acceptance testing
    4. Business acceptance testing.

  19. List the different types of acceptance testing listed in above article.
    1)User Acceptance Testing – UAT/End user testing – The end users test the software to see if it is as per the requirements. It comes at the end of SDLC. It is of two types –
    Alpha Testing – The user tests the software at the IT environment.
    Beta Testing/Field Testing-The user tests the software in the real time or client environment.
    2) Operational Testing – The system administrators test whether the software will work in the operational environment of the client.
    3) Contratual Testing and Regulatory Testing – The users and the testers test to see if the software is as per the contratual requirements of the client. The users and testers test to see if the software is compliant as per the government, legal and safety standards.
    4) Business Acceptance Testing – It is done by the vendors, to guarantee that the software will eventually pass the UAT.

  20. Types of acceptance testing:
    1. User acceptance testing is performed by the intended users of the software to check if the system meets their expectations. UAT can be either alpha testing or beta testing. It is also called as application testing or end-user testing.
    2. operational acceptance testing-Operation acceptance testing is performed by the system administrators to ensure the system works properly in the operational environment of the client.
    3. contractual and regulatory acceptance testing-Performed by the users and software testers to ensure that the software is compliant with government, legal and security standards.
    4. Businesses acceptance testing: Performed within the development organisation by the vendor to guarantee that the system will eventually pass the user acceptance testing.

  21. Different types of acceptance testing:
    1. User acceptance testing
    2. Operational acceptance testing
    3. Contractual and regulatory acceptance testing
    4. Business acceptance testing.

  22. The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:
    user acceptance testing
    operational acceptance testing
    contractual and regulatory acceptance testing
    business acceptance testing
    User acceptance testing:
    User acceptance testing is performed by the intended users of the software to check if the system meets their expectations. the user friendliness and completeness of the software application is tested.
    Operational acceptance testing:
    Operation acceptance testing is performed by the system administrators to ensure the system works properly in the operational environment of the client.
    Contractual and regulatory acceptance testing:
    Contractual acceptance testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client.
    Business acceptance testing:
    Business acceptance testing is performed within the development organisation by the vendor to guarantee that the system will eventually pass the User acceptance testing.

  23. 1: User acceptance testing: User acceptance testing is performed by the intended users of the software to check if the system
    meets their expectations. The user friendliness and completeness of the software application is tested. UAT can be either alpha
    testing or beta testing. It is also called as application testing or end-user testing.
    2: Operation acceptance testing
    Operation acceptance testing is performed by the system administrators to ensure the system works properly in the operational
    environment of the client.
    3:contractual and regulatory acceptance testing
    Contractual acceptance testing is performed by the users and software testers to ensure the software meets the contractual
    requirements of the client.
    Regulatory acceptance testing is performed by users and software testers to ensure the software is compliant with
    government, legal or safety standards.
    4: Business acceptance testing
    Business acceptance testing is performed within the development organisation by the vendor to guarantee that the system will
    eventually pass the User acceptance testing.

  24. The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:
    user acceptance testing
    operational acceptance testing
    contractual and regulatory acceptance testing
    business acceptance testing

  25. The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:
    • user acceptance testing
    • operational acceptance testing
    • contractual and regulatory acceptance testing
    • business acceptance testing

  26. The different types of acceptance testing are:
    1. User acceptance testing: Done by the intended users to check if the system meets their expectations.
    2. Operational acceptance testing: Done to ensure the system works properly in the operational environment of the client.
    3. Contractual and Regulatory acceptance testing: Contractual acceptance testing is performed to ensure the software meets the contractual requirements of the client. Regulatory acceptance testing is performed to ensure the software is compliant with government, legal or safety standards.
    4. Business acceptance testing: Done within the development organization by the vendor to guarantee that the system will eventually pass the UAT.

  27. The different types of acceptance testing listed above are:
    1) User acceptance testing: The testing performed by the intended users of the software to check if the system meets their expectation.
    2)Operational acceptance testing:Testing performed by the system administrators to ensure the system works properly in the operational environment.
    3)Contractual and regulatory acceptance testing: Testing performed by the users and software testers to ensure the software meets the contractual requirements of the client.
    Regulatory acceptance :testing performed by users and software testers to ensure the software is compliant with government, legal or safety standards.
    4)Business acceptance testing: Testing performed within the development organisation by the vendor to guarantee that the system will eventually pass the User acceptance testing.

  28. User acceptance testing: User acceptance testing is performed by the intended users of the software to check if the system meets their expectations and user-friendliness and completeness of the software application are tested. It can be Alpha or beta testing and can also be called as application and end-user testing.
    Operational acceptance testing: It is performed by the system administrators to ensure the system works properly in the operational environment of the client.
    Contractual and regulatory acceptance testing: Contractual acceptance testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client.
    Regulatory acceptance testing is performed by users and software testers to ensure the software is compliant with government, legal or safety standards.
    Business acceptance testing: It is performed within the development organization by the vendor to guarantee that the system will eventually pass the UAT.

  29. user acceptance testing
    operational acceptance testing
    contractual and regulatory acceptance testing
    business acceptance testing

  30. 1. List the different types of acceptance testing listed in above article.
    -acceptance testing
    -user acceptance testing
    -operational acceptance
    -contractual & regulatory acceptance testing
    -business acceptance testing

  31. 1. User acceptance testing- testing is done by the users of the software to check if the systems meets their requirements.

    2. Business acceptance testing-testing is done with in the development organization by the vendor to check whether the system will pass the user acceptance testing.
    3. Operational acceptance testing -testing is done by the system administrators to check if the system works well i the operational environment of the client.
    4. Contractual testing – testing is done by the user and the testers to check if the software meets the contractual requirements of the client.
    Regulatory acceptance testing -testing is done by the user and the testers to check if the software complaints with legal and safety standards.

  32. Acceptance testing is a part in the process where different parts of the team test the software with different goals in mind. There a amny different types of acceptance testing:

    -User Acceptance Testing (UAT): User acceptance tesing is test performed by the intended users of the software to ensure the software meets their expectations, is user friendly and is completed as a whole. This can be either alpha or beta testing.

    -Operational Acceptance Testing: Operational acceptance testing is a test performed by the system adminitrators to make sure the system operates properly in operational environment of the client.

    -Contractual and Regulatory Acceptance Testing: Contractual acceptance testing is performed by users and software testers to confirm the software meets the clients contractual requirements.

    Regulatory acceptance testing is also performed by users and software testers to confirm the software is compliant with government, legal or safety standards.

    -Business Acceptance Testing: Business acceptance testing is done within the development organisation by the vendor to ensure the system will pass the user acceptance testing.

    Internal Acceptance testing: Internal acceptance testing can be called alpha testing and is performed by members of the organisation that developed the software, but cannot be directly involved with the project.

    External Acceptance testing: External accpetance testing is done by people who are not part of the staff of the development organisation.

    Customer Acceptance testing: Customer acceptance testing is done the by the ones who asked the organisation to develop the software, the customers.

  33. Acceptance Testing is a type of formal testing conducted to determine its acceptance criteria
    -User Acceptance Testing :This type of testing is performed by the intended users to check if the system meets their expectation ,is user friendly and also the completeness of the software application tested .Also known as Beta Testing.
    -Operational Acceptance Testing: This type of testing is performed by the system administrators to ensure system works properly in the operational environment of the client.
    -Contractual Acceptance Testing: This type of testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client.
    -Regulatory Acceptance Testing: This type of testing is performed by the users and software testers to ensure the software is compliant with the government ,legal or safety standards.
    -Internal Acceptance Testing :Alpha testing is performed by the members of the organization that developed but cannot be directly involved with the project.
    -External Acceptance Testing :This testing is done by the people who wouldn’t be the staff of the organization that developed the software.
    -Customer Acceptance Testing :Customers of the organization that developed the software

  34. Types of acceptance testing in this article: -User acceptance testing. -Operational acceptance testing. -Contractual acceptance testing. -Regulatory acceptance testing. -Business acceptance testing. -Internal acceptance testing. -External acceptance testing. -Customer acceptance testing.

  35. The different types of acceptance testing in this article are as follows:
    -User acceptance testing
    -Operational acceptance testing
    -Contractual acceptance testing
    -Regulatory acceptance testing
    -Business acceptance testing
    -Internal acceptance testing
    -External acceptance testing
    -Customer acceptance testing

  36. Different types of acceptance testing:-
    1. User acceptance testing: Performed by the users of the software to check if the system meets their expectations. It can be either alpha testing or beta testing.
    2. Operational acceptance testing: It is performed by the system administrators to ensure that the system works properly in the operational environment of the client.
    3. Contractual acceptance testing: This testing is done by the users and software testers to ensure that the software meets the contractual requirements of the client.
    4. Regulatory acceptance testing: This testing is done by the users and software testers to ensure that the software is compliant with government, legal and security standards.
    5. Businesses acceptance testing: Performed within the development organisation by the vendor to guarantee that the system will eventually pass the user acceptance testing.

  37. User acceptance testing: this testing is perform by intended users to see that software meets the customer’s requirements. It is done as user’s perspective. It can be two types: alpha performs in IT environment BETA testing is performed in real user’s environment.
    Operational acceptance testing: this testing is performed to test the system that is the system is compatible with each version or different kind of operating systems.

    Contractual and regulatory acceptance testing:
    contractual acceptance means developed software is tested against certain criteria and specifications which are predefined and agreed upon a contract.
    Regulatory testing: it examines whether the software complies with the government and legal regulations.
    Business acceptance testing: This testing is done by vendors to confirm that system is ready to use by the organization or find some defects.

  38. The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are different types of acceptance testing:1user acceptance testing 2. Operational acceptance testing 3.contractual and regulatory acceptance testing 4. business acceptance testing

  39. Acceptance testing
    The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:
    • user acceptance testing : to check if the system meets their expectations. the user friendliness and completeness of the software application is tested. UAT can be either alpha testing or beta testing. It is also called as application testing or end-user testing.

    • operational acceptance testing : to ensure the system works properly in the operational environment of the client.
    • contractual and regulatory acceptance testing : to ensure the software meets the contractual requirements of the client.
    • business acceptance testing : to guarantee that the system will eventually pass the User acceptance testing.
    Acceptance testing uses the black box testing technique and is executed manually. Acceptance testing is done after system testing and also before making the system available in production for actual use.

    Use of acceptance testing
    1. To find the defects missed during the functional testing phase.
    2. How well the product will be developed.
    3. A product is what actually the customers need.
    4. A feedback helps in improving the product performance and user experience.
    5. Minimise the issues arising from production.

  40. User acceptance testing is performed by the intended users of the software to check if the system meets their expectations. Operation acceptance testing is performed by the system administrators to ensure the system works properly in the operational environment of the client. Contractual acceptance testing is performed by the users and software testers to ensure the software meets the contractual requirements of the client. Regulatory acceptance testing is performed by users and software testers to ensure the software is compliant with government, legal or safety standards. Business acceptance testing is performed within the development organization by the vendor to guarantee that the system will eventually pass the User acceptance testing.

  41. The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:
    user acceptance testing
    operational acceptance testing
    contractual and regulatory acceptance testing
    business acceptance testing

  42. Acceptance testing
    The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:
    • user acceptance testing : to check if the system meets their expectations. the user friendliness and completeness of the software application is tested. UAT can be either alpha testing or beta testing. It is also called as application testing or end-user testing.

    • operational acceptance testing : to ensure the system works properly in the operational environment of the client.
    • contractual and regulatory acceptance testing : to ensure the software meets the contractual requirements of the client.
    • business acceptance testing : to guarantee that the system will eventually pass the User acceptance testing.
    Acceptance testing uses the black box testing technique and is executed manually. Acceptance testing is done after system testing and also before making the system available in production for actual use.

  43. The acceptance testing is a type of formal testing conducted to determine its acceptance criteria. There are various types of acceptance testing:

    1.user acceptance testing
    2.operational acceptance testing
    3.contractual and regulatory acceptance testing
    4.business acceptance testing

  44. User acceptance testing done by the user to see if the system meets the expectations.
    Operational testing is performed by the system administration to ensure the system works properly in the user’s envitonment of the client.
    Contractual and Regulatory testing is performed by both users and testers to ensure the software meets the contractual requirements of the client.
    Business acceptance testing is performed by the vendor in the developement organisation to guarantee the system will pass the user acceptance testing

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