That's something you could easily figure out yourself. E.g., just grabbing some random JIRA:
https://hibernate.atlassian.net/jira/software/c/projects/HV/...
Opening an issue in that tracker takes 24 seconds for me. Twenty-four.
Wow.
They polyfill text!
That's just absurd.
To add a data point, I get 26 seconds on gigabit fibre that is 3 ms network latency away from "hibernate.atlassian.net".
I started using JIRA in 2008. It was faster then.
If this is what the "cloud" version is going to be, then we will be looking for alternatives, even though we're an Aussie company and I would like to be supportive.
As for Confluence, the wiki is just ok. The editor is clumsy and occasionally I have to go into raw HTML just to get highlighting, bolding etc to work.
If Atlassian is going all-in on cloud, then it needs to realize that cloud isn't "run our software, but not on-prem". Just like MYOB had to learn, it needs to be rewritten so that the web front end is streamlined and cached separately to the underlying API.
On 100Mb fiber...