Versioning & Rollbacks
Every time you upload a Zip file, or a folder we create an immutable file which can be redeployed whenever you wish. It may be that you’ve found a bug the version you just uploaded and wish to switch back, alternatively you may want to try out lots of little ideas very quickly, like in a Hackathon and version switching is helpful.
Your versions look this like in the Admin interface:
Clicking Activate on any version will enable in production within a few seconds.