What is Google Cloud Run?
A managed compute platform that enables you to run stateless containers that are invocable via HTTP requests. It's serverless by abstracting away all infrastructure management.
Google Cloud Run is a tool in the Serverless / Task Processing category of a tech stack.
Why developers like Google Cloud Run
Pay per use
Concurrency: multiple requests sent to each container
Custom domains with auto SSL
"Invoke IAM permission" to manage authentication