Andrew Certain helps getting an understanding of percentile measurements and why it is important to look at certain things from specific perspectives. I found this useful.
Containers, in particular represented through the hype around Docker, get a greater share of attention of the IT world for the past year or two. And it happens for good reason. Just like other virtualization techniques, containers allow for easier deployment, for better maintainability, for improved management of applications, for better hardware utilization and for a reduced TCO altogether. And cost in particular is likely the biggest reason for the popularity of container technology in the realm of virtualization, because lightweight technology does not only touch hardware and infrastructure, but also development and operations.