[moreira]

There's a big difference, though; they're not all connected. Each team is its own separate entity. A team with 10 people might pay Slack $100/mo, and all be in the UK. Those people and that Slack team's database doesn't need to interact with anyone else in the system. There should be no big scaling constraints here, unlike your gaming company, where everyone needs to be connected from anywhere in the world, at the lowest possible latency.

[quicklyfrozen]

My company is not particularly big but just in my team of a dozen or so we have members in Boston, Australia, Phoenix, and Seattle, and regularly deal with those in London, Tokyo, etc. It's not that unusual; in fact it's part of the reason Slack (and Hangouts) are so important.