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Comment by biot

Famously, WhatsApp supported 900M users with only 50 engineers: https://www.wired.com/2015/09/whatsapp-serves-900-million-us...

While support staff definitely increases with users (paid or not), beyond a certain size the number of engineering staff should be largely independent of user count. As long as you are able to run 24/7 ops, manage outages and incidents, scale appropriately, etc. the only variable should be how rapidly you need to build and maintain your software. The rest of the complexity is all handled via automation.

parent biot 9 years ago

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