Today I began the task of moving a lot of content from my old website (self-hosted) to my Google host. Google of course has server systems all around the world, tremendous numbers of connections to the internet and pretty much unlimited bandwidth. All these are things I've never had; plus they don't go down if my computer or my internet connection is having a problem.
Along with the move, I'm getting to know a bit about their web site building tools. In many ways it feels like I've come full circle. I started out many years ago building pages with the assistance of Geocities web site building tools on their free hosting service. I moved to building pages on paid hosting services for work and then to interactive pages both at work and on my personal site. Later I switched hosts and languages and again and again moved my site until I ended up hosting it myself on my own computer on my own internet connection. Finally... I'm back to using a free hosting service (though I pay for the domain service) with site tools provided by the hosting service, just like Geocities. (Well perhaps not just like Geocities.)
What you might want to know about hosting a site on Google:
I set up https://phantomcode-org.appspot.com to be associated with my firstname.lastname@example.org account so that http://app.phantomcode.org is the same thing.