A) Cold cutover: This involves shutting down the entire application, leading to significant downtime, making it unsuitable for mission-critical scenarios.
C) Pilot migration: While helpful for testing and reducing overall risk, it still involves downtime for the migrated subset of users or functionality.
D) Lift and shift: While potentially faster, it doesn,t address potential downtime issues within the new environment and might require adjustments for optimal performance on OCI.
B) Blue-green deployment: This approach offers several advantages for minimizing downtime:
Simultaneous operation: You run the application simultaneously on both the on-premises and OCI environments.
Thorough testing: You can extensively test the OCI deployment while the original application keeps running.
Traffic cutover: Once fully tested and validated, you switch traffic seamlessly to the OCI deployment with minimal interruption.