Opensource.com - https://opensource.com/article/18/2/important-conversation
Imagine releasing a major new infrastructure service based on open source software only to discover that the product you deployed had evolved so quickly that the documentation for the version you released is no longer available. At Bloomberg, we experienced this problem firsthand in our deployment of OpenStack. In late 2016, we spent six months testing and rolling out Liberty on our OpenStack environment. By that time, Liberty was about a year old, or two versions behind the latest build.