S3 Versioning:

• S3 versioning is a feature to manage and store all old/new/deleted version of an object.
• By default, versioning is disabled on all buckets/objects.
• Once versioning is enabled, you can only "suspend" versioning, it cannot be fully disabled.
• Suspending versioning only prevents new versions from being created. All objects with existing versions will maintain their older versions.
  • New created file will replace the latest version of file.
• Versioning can only be set on the bucket level and applies to ALL objects in the bucket.
• Lifecycle policies can be applied to specific versions of an object.
• Versioning and lifecycle policies can both be enabled on a bucket at the same time.
• Versioning can be used with lifecycle policies to create a great archiving and backup solution in S3.