This month, Mender's own Drew Moseley wrote a blog post on "Why the Yocto Project for IoT" on Embedded.com. It outlines many of the reasons why we chose it as the first platform to support.
Yocto is essentially a build system and a collection of tools to build your own Linux distribution based on your project's requirements, and it is backed by many organizations including Wind River, Mentor Graphics, Dell, Intel, Freescale Semiconductor, Texas Instruments, AMD, LG Electronics, and many more. We hope you enjoy the post!