I or others can go into more detail, but I’m guessing you do not want a super in depth answer?

One of the major cloud providers (aka renting a chunk of a data center) has a outage in the us-east-1 region. Because of internal dependencies on us-east-1, when that AWS region (aka data center) has problems it impacts service’s across all AWS regions. To end users, suddenly web sites will act strange, crash, or just not work as elements of their backend are having problems. Due to the raw size of AWS, when something like this happens vast swaths of the web will break.

For highly technical users containers are going to do everything we need.

For non technical users who need separation, profiles are a standard known framework.

Depends on seat count. But even a “small” (the smallest bucket of seats is 500) on prem install of data center/confluence can be in 6 figures…