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Very broadly speaking, yes. Most DC-compatible apps I know of are the same as, or forks of, their older server-based incarnations.
Simple core functionality in server and DC is pretty much the same, so apps that don't have complex needs will simply work. The most obvious ones are reports - they're simple flat reads of data and don't need to do anything that's affected by server or DC.
There's a nice list of things all DC developers need to think about on top of developing for server (albeit, some of them they should be thinking about for Server anyway) - https://developer.atlassian.com/platform/marketplace/guidelines-for-data-center-app-development/
(p.s. DC apps are always compatible with Server, unless someone found a good reason to code for "hey, work differently if there's only one node in the cluster")
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