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How a team can work on the same cloud application

Consider two or more applications "talking" to each other and deployed to the cloud (cloud foundry). What are the best practices for a team to follow to work (develop/test/debug) on the same instance of the applications but in his/her "own" space without creating another instance of the application in the cloud? Or should every developer need to have a local copy of those application and run it in a docker/kubernetes, for example?