Contract Testing with Pact and Modern Microservice Patterns

In a microservices architecture, ensuring that services can communicate reliably without breaking production is a constant challenge. Traditional integration testing is often slow, brittle, and difficult to maintain. This text-only course guides you from the absolute basics of microservice communication to implementing robust contract testing. You will learn how to write, share, and verify contracts, ensuring your APIs remain compatible as they evolve. What you'll learn: 1. Understand foundational contract testing terminology and the core differences between consumer-driven and provider-driven approaches. 2. Write consumer contracts using Pact to define expected API behaviors. 3. Verify provider implementations against established contracts to prevent deployment failures. 4. Configure a Pact Broker to automate contract sharing and versioning within team workflows. 5. Apply bidirectional contract testing patterns using existing OpenAPI specifications. 6. Integrate contract verification steps into modern CI/CD pipelines for continuous deployment. You will start with essential definitions and theoretical concepts before moving on to practical step-by-step written explanations and code snippets. The course concludes with strategies for scaling contract testing across multiple teams and services. This course is designed for software developers, QA engineers, and system architects who are new to contract testing. No prior experience with Pact is required, though a basic understanding of REST APIs and microservices is helpful. Start reading today to build resilient, independent microservices with confidence.