This topic of serverless enhanced microservices app came from a getsessions.org contact. These are supposed to be decentralized and distributed.
Here are some links that may help so thank him for this
Some context here from that contact
Yes both open source and commercial options- AWS Lambda and Azure Functions and Events are commercial
NOTE I now post my TRADING ALERTS into my personal FACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!