0 TL;DR

官方更新：1.84版本开始，已经不再支持IE的版本，卒。

1.84 - 2021-08-02
Breaking Changes 📣
Dropped support for Internet Explorer, which was deprecated in CesiumJS 1.83.

1 背景

在BS开发中浏览器的支持，始终是一个问题，无论是甲方的需求，还是自己产品的依赖，都离不开对浏览器的支持情况的了解。最早是查了cesium官网，后来官网改了，地址也就没了，新官方没有找到地址。

这里是找到的备份。

2 cesium官方

官方说明备份老地址
记录一下，首先Cesium的渲染依赖的是webgl，所以理论上支持webgl的浏览器即可。

检测webgl支持情况网址
官方是这么说的

Cesium is built on several new HTML5 technologies, the most important
of which is WebGL. Even though these new standards are quickly
becoming widely adopted, some browsers and systems need to be updated
to support them. If the example application doesn’t work for you, here
are a few things to try.

1.Update your web browser. Most of the Cesium team uses Google Chrome,
but Firefox, Internet Explorer 11, and Opera will also work. If you’re
already using one of the above browsers, make sure it’s updated to the
latest version.
2.Update your video card driver to better support 3D. If
you know what type of video card you have, you can check the vendor
web site for updates. The three most popular are: Nvidia, AMD, and
Intel.
3.If you’re still having problems, try visiting
http://get.webgl.org/, which offers additional trouble-shooting
advice. You can also ask for help on the Cesium forum.

3 小结

实际情况IE浏览器，微软已经不维护，而Microsoft Edge的内核时开源的chromium 。
最新Microsoft Edge、Chrome、Firefox、Opera、Safari都可。