Difference between process and service

when we start machine, service starts in background automatically although user doesnt log in. while any application starts by user will start process.

A process is any piece of software that is running on a computer. Some processes are services in that the start up when the computer starts. No user has to log on to start them. An “application” is generally a process that a user has to start.

April 9, 2007. .Net FAQ.