Tildes Technical Map

Having just joined recently and made my way though the (technical goals documentation)[https://docs.tildes.net/technical-goals], I am interested in the lower-level stuff. How scaling is being considered, off-loading static content to CDNs, fault-tolerance etc... As well as code testing, deployments, etc...

I guess this will be a bit clearer when Tildes goes Open, but I think a discussion on it could also be helpful for roadmapping and growth if possible.