Migration and hybrid operation.
WHAT TO ESTABLISH FIRST
What each system does, and what depends on it What can move, and what cannot What connectivity you actually have
WHAT USUALLY CANNOT MOVE EASILY
Applications with hardware dependencies Applications from vendors that no longer support them Anything with regulatory constraints on location
WHAT TO MOVE FIRST
Something self-contained and low risk.
WHAT MIGRATION APPROACHES EXIST
Moving the server as it is Moving to a managed equivalent service Rebuilding on cloud services Replacing with a software service
WHAT TO PREFER WHERE PRACTICAL
A managed service, or replacement.
WHY
Moving a server as it is carries all its maintenance with it.
WHAT HYBRID REQUIRES
Identity synchronised Network connectivity between environments Consistent management and monitoring
WHAT TO PLAN
Address ranges that do not overlap.
WHAT TO ESTABLISH ABOUT COST
That cloud costs are recurring and in foreign currency.
WHAT TO TEST
Performance over your actual connection, before committing.
WHAT TO KEEP
The old environment, until the new one is proven.
