#1 Create a Checklist before Sprint Review & Demo & make sure all applicable points are followed.
#2 Unit test done by the Dev team.
#3 Internal & External (Seniors or other team experts) Code Review complete with the implementation of all review comments.
#4 Code Coverage tools like SonarQube used.
#5 QA test cases are reviewed by Dev & PO.
#6 Automation for all possible stories & running the same in every Sprint.
#7 CI/CD implementation.
#8 If possible Automate the basic Smoke test & run it before the build is delivered to the QA. It will save time, back&forth between Dev & QA.
#9 Weekly demo to the team for the implemented feature, It will help to gain team knowledge & review comments too.
#10 Perform RCA for the escaped Defects & take the necessary action by adding into the Code, Automation or Checklist etc.
#11 Have a Rollback plan for failure in any customer.
#12 Follow Acceptance Criteria & Definition of Done (DOD) most effectively.
#13 Control on the latest build to the production. QA will always take the latest build from the version control & final tested build will submit for the UAT & Production.
#14 Virus & Vulnerability check on build/package submitted to the Production.
#15 Can perform Code Cleanup at regular intervals of time.
#16 Impact Analysis of the implementation.
#17 Voice of the Customer (Customer Call Recording) & action item of the same.
#18 RCA of the escaped Defect.
Man can make mistakes & machine helps to avoid the same so, use Automation as much as possible.
If you know anything else then don’t forget to add.