Extremely helpful when needing to concurrently use multiple accounts on systems such as AWS

I can't stress enough what a big game changer this is in turns of usability (log into different accounts at the same time) and privacy protection (separate data between different websites). Obviously we need this to be a first class citizen in Firefox, i.e. each bookmark should be able to specify what default container to open in.

Works flawless

Different profiles in each tap, man I cannot live without it!!! <3

i used to use two different browsers to manage two sets of profiles which was honestly tiring. this new feature is like a dream!