What is tested during acceptance testing?

Acceptance Testing verifies whether the software meets the requirements of end-users and business stakeholders. The main goal is to ensure that the product is ready for release and meets expectations.

Tests include:

• Functional suitability: Compliance of all implemented functions with specifications and user expectations.
• Business logic: Correct execution of key business processes and usage scenarios.
• User scenarios: Testing the system from the perspective of a real user, performing typical tasks and workflows.
• Requirement satisfaction: Verification that all declared requirements of the business stakeholder and user have been fulfilled.
• Operability in the target environment: System behavior in an environment as close as possible to the real production environment.
• Non-functional aspects (often, but not always): Usability, stability, performance (basic checks) — to the extent necessary for acceptance decision.
• Data correctness: Integrity and accuracy of data after operations.

In essence, acceptance testing is the final check of the product against business goals and user needs before its release.