We selected Ubuntu Server 16.04.03 X64. This linux flavor is the top choice of developers for servers across the globe. It has great support documentation, online resources, and an abundant pool of folks familiar with the OS.
Ubuntu Server is a dream to work on. It has an extensive library of programs that can be easily installed and configured. It has a really small footprint in terms of space and memory.
Ubuntu Server is a free open-source operating system.