Mesosphere DC/OS is a distributed operating system based on the Apache Mesos distributed systems kernel.

DC/OS and Apache Mesos include the following features:

• Scalability
• Fault-tolerant replicated master and slaves using Apache ZooKeeper
• Support for Docker containers
• Native isolation between tasks with Linux containers
• Scheduling for multiple resources (memory, CPU, disk, and ports)
• Java, Python, and C++ APIs
• A web UI for viewing cluster state (Apache Mesos UI)

By default, DC/OS includes the marathon orchestration platform for scheduling workloads and Mesosphere universe, a collection of services that can be added to your service.

The following diagram shows the architecture of an Azure Container Service cluster using DC/OS: