Yes Patrick Management insists on what we use how we use it and when we use
And then it;s our fault for using it. I've lost count of the Great new Product that management has been sold without consulting with IT only to find that it's unsuitable for the task but it's IT's Fault that it doesn't work not the Managements or the Vendor who misrepresented it so that they could get a sale.
I saw this back in the days that I worked Mainframes the Sales people said it's a Computer so it will do the job required and that is all that they knew. We have this and have reduced it's price so it's ideal for what you want. Doesn't matter that it uses a different Language to do the job and everything has to be rewritten so it's usable and will cost millions of $.
Management comes down saying we bought you this which cost so many million $ and you want to spend how much on rewriting the software? Or It's a computer so why doesn't it work like the old one that we have just replaced?
You get Management who are only interested in making a Quick Buck who spring for the cheapest option possible and then blame IT when it doesn't work. After all when was the last time a CEO admitted that they messed up and made a mistake rather than saying that the Underlings rejected their "Improvements" and did everything possible to prevent them being successful.
In the case you presented above I wouldn't be the slightest bit surprised if Management of the Cloud Provider didn't see IE's as a "Weird" browser with "Strange Nonstandard Operations" so instead of shelling out the necessary funds to rewrite their Interface they just do not support IE and tell all potential customers to use a different browser which is more secure or whatever. It's not to improve your Security or whatever it's to save them the necessary funds of supporting a Browser which sets it's own standards and ignores existing Standards at every opportunity.
Col