You could guess that since the Community edition is MIT licensed that it's free, but then again the language right above it says "non-production or experimental use", where Standard says "production and business use". Now, MIT I know basically means "It's on you, so if you wanna go prod go prod", but that wording just isn't friendly.
Looking over the Community Edition further, I'd honestly be stunned who would ever use this, and thus, what, if anything, about this is "Open":
- Only 5 replicas per function, ie, hope any given function doesn't have more than 5 invocations at once.
- No "scale to zero", (which is the usual cost benefit of serverless)
- There is an in-mem queue, except it's being End-of-Life'd in June, which is... a week from now.
- It does separately support cron triggers! This is great.
- It does not support any other triggers except direct call.
- Can't integrate it with any other K8s deployment tool
I honestly cannot fathom why someone would use this.