You are defining the testing strategy for your project.

When defining the testing strategy for a project, especially in the scope of Integration Testing, it is crucial to include:

A. Interfaces with other applications: This ensures that the application under test correctly interacts with other systems, which is critical for operations that depend on multiple interconnected systems.

D. Functionality of end-to-end business processes: Testing the complete functionality of business processes from start to finish ensures that the system supports all required tasks and workflows effectively, identifying any process or data flow issues before going live. Options B (Connectivity between database and application servers) and C (Quality of data for migration) are relevant to system and data migration testing but do not typically fall under the specific scope of Integration Testing, which is more focused on functional and interface validations.References:

Integration testing guidelines in SAP implementations

Best practices for ensuring system integration and process functionality