Containers is the big thing imho. Having two bookmarks that go to different Gmail accounts, with each opening in a different container tab, and each container being logged into just that account. Same for AWS accounts.

Is the purpose of using two bookmarks to open the container and gmail simultaneously? I just use one bookmark, two containers, each is only logged on to one gmail account.

One bookmark opens one account, the other opens the other account. I use an extension to match URLs to containers. So it's possible to have bookmarks "gmail [work]" and "gmail [personal]" that open in the right container, already authenticated.

Are extensions and their settings shared across all containers?

One thing I love about Chrome/Edge profiles is being able to different extensions enabled/disabled and configured differently across them.

For example, I have a "private" profile that always runs windscribe vpn and other privacy-heavy extensions that I might not necessarily want running on my "base" profile.

Saves us with AWS accounts!

O365 tenants too! Finally possible to log into multiple at the same time.

Though MS Teams often gets stuck in a reload loop inside a container, but Teams is a total trainwreck anyway.

Not surprised. Do they not realize that some of us deal with more than one account?