IT infrastructure for small and medium-sized businesses

Question

System administration

Please describe the IT infrastructure of the enterprise (for example, your own). Interested in:
1. What software is installed (what servers, databases, backup, monitoring, management, treatment, etc.)
2. How does the 1C system work (server, clients, web)
3. What software do you use as a system administrator to facilitate work (remote desk, scripts, etc.)
4. Which of the employees has what access to various data
5. How security is arranged (how the local network is built, how the servers are isolated, antivirus and firewall work)
Many thanks in advance to all those who answered .. .

Answer 1

The set of software depends on the specifics of the business. And the size of the infrastructure depends on the need for it. Many of the things you listed may not be. For example, in a small business, the entire infrastructure may consist of a director's laptop with 3G and a printer, and software from an MS office and a bank client. The rest of the employees are not supposed to have a computer by the nature of their activity.
All your points are decided on the basis of specific tasks and financial capabilities of the enterprise. There is no universal solution.

Answer 2

ha, everything is very funny, that's how the developments were taken and opened))), but the answer is the software is installed based on the tasks of the business,
everything else is confidential information and is not subject to disclosure