I don't know when Heroku launched, but that's where GAE fits in the summary to me - it's 'serverless' in the 'not managing a server' sense, but there's some con

I don't know when Heroku launched, but that's where GAE fits in the summary to me - it's 'serverless' in the 'not managing a server' sense, but there's some conflation (at least in the article, but generally too I think) with a 'function as a service' model, which is inherently a subset of serverless I suppose, and where Lambda sits.