What are Microservices?
Microservices are an architecture for breaking up a monolithic application into a collection of smaller pieces. Each of those pieces provides a particular function via a well-defined and carefully managed API. The collection delivers the same overall business value as the original monolithic application, but the independence of the individual pieces means they can be updated much more quickly without impacting the overall collection. (This requires, of course, that any changes to the API are done in a backwards-compatible way.)