Which part of testing in the pipeline is faster: unit tests or integration tests?

Unit tests are usually faster to execute than integration tests. This is because unit tests check individual small parts of code (modules) in isolation, without interacting with external systems or components. Integration tests, on the other hand, verify the interaction between multiple modules or systems, which requires more time for environment setup, data loading, and execution.

Therefore, in the pipeline, unit tests are run first for a quick check of basic functionality, followed by integration tests for a more in-depth verification of interactions.