[nonameiguess]

It specifically says in what you quoted "or with a vendor or service provider." If you're able to get away with only hiring people who don't understand the intricate details of filesystem drivers, overlay networks, and hardware virtualization because you just consume your infrastructure from a cloud provider, you're included in "team sport," where your team includes the cloud provider who hires a whole bunch of people with expertise totally different from your company. WhatsApp didn't stand up its own networks or build its own phones. It stood on the shoulders of giants who knew how to do that.

[blueslurpee]

Well said, I agree with you.