Peer to peer: Computers are networked to each other without a central server. Files are stored on singular devices and all computers are equal. Features: Cheap to set up, Files and software is stored on each computer, Computers can share files in between each other, each computer has their own peripherals and each computer is responsible for backups and security updates. AV: Cheap to set up, all computers are equal, easy to maintain, no specialists required and no dependancy DV: Computers cant be backed up centrally, less secure and is difficult to maintain file system order.