Perform regression testing on the test environment according to testing strategies defined in your Route to Live Plan. Ensure your application is working as expected now that it is running in Pega Cloud. For more information, see Application Testing Strategy.
Test, make changes, and retest until your developers feel the application runs smoothly. Gather all your changes in a RuleSet or branch as described in the Deployment Manager documentation. Fix issues as they are found in the development environment only. Continue this process until functional parity is achieved and the application passes the test cases defined in your testing strategy for the environment.
In addition to any other testing or monitoring, also monitor your application with PDC, as described in PDC Monitoring.
End-to-End and Integration Testing
This stage includes application functional testing to validate that the application is working as expected with your test data sets. In addition to all the usual functional tests, perform any preliminary integration tests that are required.
There were likely several integration changes required when moving your application to Pega Cloud. Verify that your external connections are working properly, and any required external data sources are accessible.
If your application uses emails, test that they are being sent correctly from your application, that external servers are properly connected and provide correct data, that port configurations are correct, that users have the correct privileges and access rights, and so on.