In the interface everyday. I am the IT manager for a mid-size company (150 employees) and we use 365. The web interface isn’t too bad (both server and consumer side). But I don’t like MS because I think they crushed innovation on their way up.
Who knows what could have been if everything was open source.
Another "hat" I wear now is software security. Sharing code is a wonderful way to be more productive, but it also means sharing bugs and vulnerabilities. New CVE (Common Vulnerability Enumeration) listings arrive almost daily. A single shared library with a vulnerability can expose hundreds of products built with the library. The price we pay for productivity and convenience is perpetual vigilance and regular patching when the flaws surface.
I'm currently moving multiple systems that live on dedicated servers into Docker containers using microservice patterns, kubernetes pods and helm charts to "compose" the systems. It's a very different paradigm and it has a new set of attack surfaces. We have 3 people dedicated to running security scans on each new "pod" and ensuring everything is as vulnerability free as possible.