whats the impact of max-age related to client cache

if i am cloning my env which is whole stack(author,publishers and dispatchers)what are thing i need to consider after cloning to make it work. What are the changes needed in the new one ,like if config which and whatif uri which one?

not looking to automate, updated the question now.

Does online back up consider index, or harmDoes offline back up consider index, or harmThere are other back up also like tape and Snapshot, whats the relevance of that in regards to back up. Whats the best back up in regards to index of AEM OOB/Custom?