We're a New Zealand based cloud infrastructure provider. With our cloud built on OpenStack we were already a very python focused company, so when it came time to build a proper company website we needed a CMS we felt comfortable doing development for.
Wagtail proved to be ideal. Flexible, fast, opensource, and ultimately built on Django. We developed the website in-house ourselves, then deployed it on our own cloud in docker.
Wagtail was wonderful to work with.