Which additional two approaches can you take to further reduce the rollbacks?

You need to reduce the number of unplanned rollbacks of erroneous production deployments in your company’s web hosting platform. Improvement to the QA/Test processes accomplished an 80% reduction .

Which additional two approaches can you take to further reduce the rollbacks? Choose 2 answers
A . Introduce a green-blue deployment model.
B . Replace the QA environment with canary releases.
C . Fragment the monolithic platform into microservices.
D . Reduce the platform’s dependency on relational database systems.
E . Replace the platform’s relational database systems with a NoSQL database.

Answer: A,C