Docker is hot. It was the second “best overall open source cloud project”, according to a survey by the Linux Foundation and The New Stack last July. And Google Trends shows Docker accelerating in buzz ahead of OpenStack and virtualization, out of virtually nowhere in 2013.
But why is Docker hot? And with whom? Cloud software providers have led the Docker craze because software as a service (SaaS) has changed the software delivery model. There’s no longer any reason to group or delay new releases that were previously required when distributing physical software.
The speed of delivering innovation to your users is really limited mostly by your own development operations. Thus devops teams were born to streamline and automate building, testing, and deploying, shrinking time between releases from literally months or years down to days, or even minutes — also known as continuous delivery.