Dapr - The Distributed Application Runtime
Microsoft's Sidecar for Distributed Applications
Dapr is a free and open-source sub-system for distributed applications that simplifies development by offloading Service Invocation, Publish and Subscribe, Secret Management, Input/Output Bindings, State Management, and Virtual Actors as a sidecar pattern.
Book: Learning Dapr: Building Distributed Cloud Native Applications (2020)
A great introduction to Dapr!
A great introduction to Dapr from two prominent members of the Dapr development team.
Book: Dapr for .NET Developers
Microsoft's Introduction to Dapr
Dapr for .NET Developers is a free Dapr book. You can download it from Microsoft Docs Site.