In 2014, right before the release of Vagrant Cookbook, I conducted a Vagrant usage research to get more insights on how people were using Vagrant at that time. Three years have passed since then, and I figured it would be interesting to repeat the research and compare the data, see what changed and how Vagrant is being used nowadays.
These are the compared results! Below the infographic you will also find the main graphs with raw data.
By the way, if you didn't know, I recently released the second edition of my Vagrant Cookbook, now completely updated to cover the latest changes on Vagrant. Have a look: https://leanpub.com/vagrantcookbook