What do you understand by acceptance criteria besides business requirements?

In addition to business requirements, acceptance criteria include:

• Functional requirements: verification that the system operates according to technical specifications.
• Non-functional requirements: performance, security, usability, scalability.
• Code and architecture quality: compliance with coding standards, absence of critical bugs.
• Test coverage: presence of automated tests covering main scenarios.
• Documentation: completeness and relevance of technical and user documentation.
• Compatibility and integration: proper functioning with other systems and components.
• Usability and user experience: interface convenience and clarity.

For example, acceptance may include verifying that a new feature does not degrade performance or cause regressions, and that all errors are handled correctly.