Cloud Foundry is implemented as a bunch of microservice components (authentication, public API, notifications, logging, metrics) that are deployed together usin

Cloud Foundry is implemented as a bunch of microservice components (authentication, public API, notifications, logging, metrics) that are deployed together using BOSH. Deployment becomes the big issue with microservices, and something like CF or BOSH allows you to quickly deploy a bunch of VMs, containers, or apps that represent your whole system. There's still advantages to separating things out, even if you often run them all together on the same machine or container.