Slightly hijacking this thread to ask: I've not heard of Platform.sh before. Do y'all have a free/hobby plan for someone wanting to become familiar with the it? If not, no worries.
We are not big on free. We like money :) And people like that we will probably be around in a decade (and won't stop free as soon as we've locked enough people -in). We do have a no-strings-attached free trial ...