What are microservices?

A.
APIs that exploit Docker containers and are deployed as Platform as a Service.

B.
APIs designed with intimate details of the underlying infrastructure.

C.
Discrete building blocks for cloud native applications that abstract the service implementation.

D.
SOA-type services wrapped around legacy systems.

Explanation:
http://ryanjbaxter.com/2015/07/15/using-microservices-to-build-cloud-native-applications-part-1/