Services of all kinds are all the rage. Daemons and the like have been around since the early days of computing but we've only recently, ostensibly speaking, been given the chance to make services with .NET Core.
The person that I first saw writing colloquial services was Tim Corey - he was even doing it before .NET Core!
Tim is a wealth of .NET knowledge and he has an upcoming talk on .NET Rocks that I'm looking forward to! If you are reading this Tim, you rock!