Best practice for enterprise IT infrastructure?

Question

Work organization

Hello! I recently came to work as a system administrator for one production. And, it seems, everything is fine at the enterprise, equipment is being purchased, money is allocated for IT. But the infrastructure itself is somehow, not ordered, or something. For example, there is AD, but there is a mess. There is a corporate mail, a messenger, an accounting system, an application accounting system, and they are all separate, you need to create separate accounts for each service. The network is a mess, there is no normal network map, documentation. If something happens to the network, it takes a lot of time to find the ends. There is a desire to put everything in order, but knowledge is not enough. Yes, and I'm more of a tactician than a strategist. The head of IT, I'm used to it, but I agree that it can be better, and I don't mind. In general, I would like real examples of where and how it works. Where to read, watch, listen and something like that?

Answer 1

You can read ITIL , ISO 20000 and COBIT .

Answer 2

For example, there is AD, but there is a mess.

If you gave an assessment, then you already know how it should be!
All that's left is to clean up the mess! :)

Yes, and I'm more of a tactician than a strategist.

And I, just the opposite ! :)