Composition of the corporate portal documentation?

Question

Documentation

Hey toaster!
At work, I encountered the problem of the lack of any technical documentation for the corporate portal.
Polugosovskaya office - so I was not surprised.
I decided to deal with the issue and look for responsible specialists for this resource. There were none, and the architect has long been gone from the company. Moreover, there is no original TK either.
Since the topic turned out to be important not only for me, the business decided to allocate a little money for the audit and preparation of the necessary documentation for the portal.
But, having no experience working with portals, I realized that I could not imagine the composition of the documents necessary for the normal operation and integration of such solutions.
Toster, help!
What documents should every self-respecting architect of a corporate portal integrated with many internal and external services have?

Answer 1

Start with GOST 34, GOST 2.601
There is not much, but they will give an understanding of what you generally need to have from the documentation as a whole.

Answer 2

If there is no interested person in authority in the company - useless.
If there is, he will kick whomever he needs and they will tell you everything.
Your business will only be talking to people all day long.