1. Plan and Analyze - Understand how the new feature might impact current functions. 2. Use Feature Flags - Enable or disable the feature easily if issues arise. 3. Test Thoroughly - Perform unit, integration, and user tests in a separate environment. 4. Roll Out Gradually - Release the feature to a small group first, monitoring for issues. 5. Monitor Closely - Track system performance and errors to catch problems early.

we adhere to a rigorous practice for product enhancement patch releases, ensuring that each update undergoes a comprehensive regression testing cycle. This testing phase focuses on analyzing the system's behavior concerning code optimization, performance improvements, and compatibility with existing functionality.To mitigate potential risks, we adopt a pre-production deployment phase before the final rollout. This environment serves as a mirror to our production setup, allowing the code to be thoroughly tested by both functional and operational teams. This phase enables us to identify and resolve any issues in a controlled environment, ensuring that the final deployment maintains the stability and integrity of the system.

1) Clearly define success metrics for deployment to occur. 2) A/B test, if possible! Some users to new features while others remain on existing system. 3) Proactive monitoring criteria and hyper-care post release. 3) As mentioned already, Configuration options to enable/disable.

1) I run the unit tests and the integrated tests with a good test script that covers all possible use cases. 2) Once all the results of the tests in point 2) are "OK", the user runs the UAT. 3) Once the results of the tests in point 3) are "OK", I run the Regression tests to check that the operation of other functionality previously existing in the system was not affected. Once the Regression test is "OK", I transport the solution to SAP Production. 4) Once the solution is uploaded to SAP Production, I run some Smoke Test to check that there are no error messages or something is missing to transport. 5) I monitor the user's first executions in SAP Production to verify that the system results are as expected.

Oh, sure, adding new features to a stable system! What could possibly go wrong, right? If the system’s been running smoothly and hasn’t crashed in weeks, obviously it’s the perfect time to sprinkle in a bit of chaos with that “small change.”