How to transfer a large site to a new owner from ispmanager?

Question

System administration

I sold a site that occupies 90Gb with all the files. We need to somehow transfer it to the new owner. I don't have access to his server. What kind of system on his server, I also do not know. I have ispmanager.
Can I backup using ispmanager and transfer the archives? If the buyer does not have ispmanager, will he be able to deploy the site? And how to deploy the database in this case?
If this is not possible, then how is it better to transfer a site of such a volume?

Answer 1

We go to the hosting - we do the database export (it turns out the file * .sql (?)) - we give it back.
We go to the hosting or through the ftp manager - download all the files of the site - give it back.
A person comes to his hosting - database import.
A person comes to his hosting or via ftp manager - uploads files.
The only thing that needs to be corrected is the file with the connection to the database (settings.php or something there somewhere) - that person should do this.
Like so.....

Answer 2

Separately, a database dump and a separate archive with the site directory.
Why are you even asking here? Here there is no new owner and no answer to questions addressed to him personally "can he deploy the site?" he cannot give.