Name the difference between Acceptance Test and Functional Test

Difference Between Acceptance Test and Functional Test

Acceptance Testing:

1. Purpose: Acceptance testing is conducted to determine whether a system meets the business requirements and is ready for deployment. It ensures that the software is acceptable to the end user or client.
2. Audience: This type of testing is typically performed by the end users, clients, or stakeholders to validate the software against their needs and requirements[1][2][3].
3. Scope: Acceptance testing covers a broad range of tests, including functional, non-functional, and performance aspects, to ensure the software meets all specified criteria. It often includes User Acceptance Testing (UAT), Business Acceptance Testing (BAT), and other forms like Regulation Acceptance Testing (RAT) and Contract Acceptance Testing (CAT)[3][4].
4. Timing: It is usually the final phase of testing before the software is released to production. It comes after unit, integration, and system testing[3][5].
5. Criteria: The tests are based on acceptance criteria defined by the client or end user, focusing on whether the software delivers the expected value and functionality in a real-world environment[1][3].

Functional Testing:

1. Purpose: Functional testing aims to verify that each function of the software application operates in conformance with the requirement specification. It focuses on what the system does[1][2][4].
2. Audience: This type of testing is generally performed by testers and QA teams to ensure that the software behaves as expected according to the functional requirements[1][2][3].
3. Scope: Functional testing is more focused and specific, testing individual functions or features of the softwar...