Something, well may things, kill about Microsoft. The Office suite have a wonderful API and loading a JS app with an an interface in the apps works great.

We took an Elm app from our web app and put into Excel to control downloading reports. Works great.

Except you have to side load this and that is a pain - or you have to go through the MS App Store, which is a whole other headache.

If anyone has any advice on making it easy for customers to install Office apps please let me know.