[jba]

Depending on their workloads, running their own datacenter(s) might save them millions a month. I know it does in my own case. That said you give up flexibility for the $ savings. They may think the additional flexibility is worth the cost differential at this point.

Would be good to hear their perspective on this.

[negz]

I believe we expect moving to the cloud to be more expensive than running our own DCs as you suggest, but I don't believe that takes into account any 'wasted developer time' you might factor into this.

I believe we started building this platform when AWS was very new, and hadn't seen a compelling reason to transition from it to the cloud until now. There's a couple of posts with more details behind our decision to go to GCP, but primarily it was to leverage their data tooling.