elebase - Have a fully operational back end, in less than an hour.
AWS Lambda - Automatic, event-driven compute service
Dark Language - Holistic language, editor, and infra for building backends
Webscript.io - Webscript.io is a website that hosts LUA scripts that you can invoke from the web.
Azure Functions - Azure Functions is a serverless event driven experience that extends the existing Azure App Service platform.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.