From the top of my head I would say a database migration. It can be done without downtime, but usually means having a replica and incurring in more costs for a short period of time. So, if limited resources are available, you can opt for a maintenance window with downtime.
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From the top of my head I would say a database migration. It can be done without downtime, but usually means having a replica and incurring in more costs for a short period of time. So, if limited resources are available, you can opt for a maintenance window with downtime.