Servers

Server

specialised computer with different role to PC

Client server

Client will request service provided by server

Server will provide service by only by request of client

Peer-to-peer

Rely on computers sharing resources between them

Each computer configured to share files with each other

All computers have equal status and role

Comparison of network setup

Backup and security done on file server, all users reliant on server, complex setup

Security and backups done on individual devices, not server reliant, easy setup

Hosting

Makes WAN servers available

Hosting company stores files and makes them accessible 

Web pages, images, youtube 

Cloud

Stores data in an off site storage system that uses file servers

Can only access with internet, backups not your responsibility, on demand and anywhere