Why do you need a server for ip cameras and its differences from nvr?

Question

CCTV

Tell us why you need a network server and why when there is nvr. and how will it affect the scale of 100 or more cameras?

Answer 1

NVR is positioned as a complete solution for the end user.
And servers with software are for large distributed systems. They provide more options.
But there are NVRs for large systems, but they usually represent the same server with pre-installed software.