Alternatively, there are emulators that can create a virtual machine on your M1 mac that emulates an entire Intel machine.
Things to look at: does windows for ARM have a copy of IE, and if it does: is it good enough for your needs? - if so: you could try Parallels + Windows for ARM technology preview (but you cannot buy a license for that windows at this time - legal at your employer might object). This is not so easy on an M1 than it was on an Intel based mac. The initial version of Explorer was incarnated from Spyglass Mosaic which Microsoft licensed for a modest quarterly fee and a share of the non-Windows product revenues.
You could try 2 avenues, neither is super easy. Even Microsoft eventually saw the mistake and switched to Edge. Use Microsoft Internet Explorer on your Mac Open web sites that require Internet Explorer on your Mac with the help of Parallels ® Desktop. Some companies drank too much of the Microsoft cool-aid in the days when IE was dominating the browser wars and built stuff that only IE will ever support. And it's even more dead on mac, let alone on M1 based ones.
