A recovery plan needs a rehearsal.

List the dependencies.

Record what the service needs to start: configuration, credentials, certificates, data and access to upstream systems. An alternate server may still share the same provider or DNS dependency.

Make the exercise controlled.

Choose a scope, keep a route back and define a way to check the result. Avoid treating a running process as proof that a user's complete journey works.

Measure recovery, then revise the plan.

Practise with a spare environment. Record the steps, time and manual actions involved, including how clients find the restored service. Keep the updated procedure with the protected backup inventory.