The session overviews key architecture principles, design patterns, and technologies used to build microservices in the Node.js stack. It covers the theory of the GRPC framework and protocol buffers mechanism, as well as techniques and specifics of building isolated services using the monorepo approach with Lerna and yarn workspaces, TypeScript. In the second part of the session, we will jump into live coding of currency converter microservices infrastructure based on gRPC protocol in Node.js using typescript and showcase the process of creating a new microservice.