A guide to building a unified data access layer on domain REST APIs

This tutorial guides users through the process of integrating and composing data from different domain REST APIs using Hasura Data Delivery Network (DDN). The main goal is to connect two REST endpoints to a supergraph and integrate the data from these endpoints by defining a relationship between the types returned by the endpoints. By following this guide, users can create a unified data access layer on domain services, allowing for efficient and effective connection of various data sources.