Moving your hosting.
WHAT TO ESTABLISH FIRST
What must move What depends on what How much downtime is acceptable What the fallback is
WHAT TO PLAN
The sequence Who does what How you verify When you decide to proceed or revert
WHAT TO PREPARE
The new environment, complete and tested A current backup A rollback plan
WHAT TO RECORD BEFORE CHANGING ANYTHING
Every DNS record Current configuration Anything restricted to your current addresses
THAT LAST POINT
Services allowing your current address stop working when it changes.
WHAT TO DO ABOUT DNS
Lower the time-to-live well in advance Switch, then raise it once stable
WHAT TO KEEP RUNNING
The old environment, until the new one is proven.
WHY
So reverting is possible.
WHAT TO VERIFY AFTERWARDS
The site loads Mail sends and receives Scheduled tasks run Integrations work
WHAT TO DO LAST
Cancel the old arrangement, once certain.
