Marathon and Chronos are the core and essential frameworks for most Apache Mesos clusters. Marathon ensures long running tasks are running in the datacenter and is commonly used to maintain high availability of other frameworks. Chronos is the fault tolerant cron of the datacenter. There have been significant advances in both of these frameworks to leverage the latest features of Apache Mesos including persistent storage in addition to extending the capabilities of the system such as networking and security. This session will provide an overview of all the new features along with experience from the field and best practices for using these features in production. The session will conclude with a look at the roadmap for each of these projects providing a glimpse into what to expect over the next year.