@pexels

A sidecar to a microservice is a task that runs at the periphery.

It could be a task to/for:

1. Log
2. Proxy
3. Monitor
4. Configuration
5. Platform abstraction

The sidecar could be a different runtime environment and programming language so that it doesn't have to be rewritten for every microservice.

Sidecars can be deployed in the same container with the primary service or separated, but would follow its primary wherever it goes.