An interesting feature of the new Firebase is that with the storage option you can host a small static web site, with your own custom domain and you get a free SSL certificate. All on the free plan as long as you aren't expecting massive hits.
I was hosting a simple app promotion page on github.io
but you can't get the custom domain with SSL directly which was something I needed for a beacon experiment.
Now I'm on Firebase I'll be exploring some of the more app centric features as well, their free plan has pretty generous allowances and it seems like Google are throwing their weight behind it, giving time in the IO keynote to it.