The article discusses Synthetic GraphQL, a new feature of Azure API Management, that allows building a GraphQL API from existing HTTP-based APIs (including REST and SOAP). It allows coexisting APIs while migrating client applications to GraphQL, making it easy to migrate existing APIs to a GraphQL service over time or as needs evolve. The article provides a step-by-step guide on creating a Synthetic GraphQL API and adding resolvers, validation, authorization, and other policies.

Takeaways:

• Synthetic GraphQL can help migrate from REST to GraphQL without disrupting the existing APIs and client applications.
• The feature can be beneficial for those who want to try GraphQL but are hesitant to leave their existing REST APIs.