i think they are talking about how it is very standard for gRPC systems to generate server and client code that make it very easy to use. see this comment for more https://news.ycombinator.com/item?id=26466902
- Standard Authentication and identity (client and server)
- Authorization support
- Overload protection and flow control
- Tracing
- Standard logging
- Request prioritization
- Load balancing
- Health checks and server status