This document discusses container platforms and PaaS. It provides context on containers and supporting technologies like Docker. It describes how containers are limited when confined to a single host, and how schedulers can distribute containers across multiple hosts. It outlines common production tools used with containers like configuration management, monitoring, and logging. It compares PaaS and containers, noting how PaaS consumed containers before they were widely known, and how the lines between the two are blurring as container platforms provide more services. It introduces Mantl as Cisco's container stack designed to run container workloads and big data applications across clouds.