Build a simple computer vision connected to IP camera and count people

I want to build a computer vision system were the system will be accepting an IP camera and it should count the humans appearing in the camera, once a human is captured the system should take a photo and store it on a physical location on the server

Note: the system supposed to work on a server hosted on aws, azure, digital oceans, godaddy or any cloud hosting

Main features:

1- count number of humans appears on the IP camera and store the information in the DB like MySQL or Firebase real time DB with time of occurrence
2- take a photo and store it into a physical folder inside the server

Note once the system is approved a full code handover needs to be done