&gt; Find me a single ops eng on the market who has done scale in GC?<p>Every user of appengine, for a start. You need to code to their datastore, but apart from that scaling is practically infinite - and completely invisible. We don&#x27;t need to configure, provision or even * understand * load balancers or geographically redundant servers.<p>Concrete examples? The royal wedding website was served from appengine a few years back; I imagine you&#x27;d be impressed with how that scaled from nothing to phenomenal traffic loads and back again. And Khan Academy, Snapchat, and now Spotify ought to meet your definition of &quot;done scale&quot;.