The GNU General Public License (GPL) is one of the most widely used open source software licenses. It was created by the Free Software Foundation (FSF) to protect the GNU’s software from being made proprietary. The GPL emphasizes the principles of software freedom and promotes the sharing of knowledge and collaboration. It is a copyleft license that requires any modified versions or derivative works to be licensed under the GPL.

I recently had a chance to speak with Chris Mellor at Block and Files about the emergence of Velero as the standard for Kubernetes data protection. I shared some ballpark estimates of market share across open source and commercial vendors to make my case. These numbers were obtained through diligent market research. They are estimates, but they are not imaginary.