We have heard many DevOps success stories happened in organizations that use open source softwares such as the LAMP stack (Linux, Apache, MySQL, PHP). Having said that, achieving DevOps Transformation is independent of the technology being used.
There are umpteen successful DevOps Transformation Stories achieved with applications written in Microsoft.NET, COBOL, mainframe assembly code, SAP, mobile applications, and even embedded systems.
Reference — The DevOps Handbook — How to Create World-Class Agility, Reliability, and Security in Technology Organizations by Gene Kim, Jez Humble, Patrick Debois, John Willis
