Ask Slashdot: What Exactly Are 'Microservices'?

After debating the term in a recent Slashdot subthread, longtime reader Tablizer wants to pose the question to a larger audience: what exactly are 'microservices'? Over the past few years I've asked many colleagues what "microservices" are, and get a gazillion different answers. "Independent deploy-ability" has been an issue as old as the IBM hills. Don't make anything "too big" nor "too small"; be it functions, files, apps, name-spaces, tables, databases, etc.Overly large X's didn't need specia