Designing Serverless Applications with Ports and Adapters

When building serverless applications, it is easy for cloud-specific dependencies to tangle with your core business logic, making testing difficult and code hard to maintain. This text-based course teaches you how to separate concerns and write clean, maintainable serverless code using the Ports and Adapters (Hexagonal Architecture) design pattern. You will transition from writing monolithic handlers to designing modular, flexible AWS Lambda functions that are easy to test, adapt, and scale. By decoupling your core application logic from database clients, external APIs, and cloud-specific event triggers, you will build systems that stand the test of time. What you'll learn: - Understand the core concepts of Hexagonal Architecture and the Ports and Adapters pattern. - Define clear interfaces (ports) to isolate your core business logic from external systems. - Implement concrete adapters for database engines, external APIs, and AWS Lambda triggers. - Improve testability by writing fast unit tests using mock adapters instead of deploying to the cloud. - Apply modern dependency injection principles to cleanly assemble your serverless components. - Manage application state and configuration cleanly across different environments. This course begins with foundational architectural concepts and terminology before guiding you through practical code structures and refactoring patterns. You will read through clear explanations, conceptual breakdowns, and step-by-step code examples. This course is designed for software developers, cloud engineers, and architects who want to improve their system design skills. No prior experience with clean architecture is required, though a basic understanding of serverless concepts is helpful. Start reading today to elevate your serverless application design and write highly maintainable cloud code.