APIs Are Not Enough: Building a Truly Composable Architecture

## Introduction
Briefly define Composable Architecture and its benefits (flexibility, modernization). Highlight the common misconception that “APIs = Composable.” Introduce the argument: APIs are necessary but not sufficient for true composability.

## The Problem with Basic APIs
Explain how traditional APIs can still lead to tight coupling. Discuss the limitations of simple CRUD APIs. Illustrate with examples (e.g., tightly coupled data models, lack of versioning).

## The “Right Kind” of APIs: Key Characteristics

### A. Domain-Driven Design (DDD):
Explain DDD and its importance for aligning APIs with business capabilities. Show how DDD leads to more meaningful and reusable components.

### B. Event-Driven Architecture (EDA):
Explain EDA and how it enables decoupling through asynchronous communication. Discuss the benefits of EDA for scalability and resilience.

### C. API Versioning and Backward Compatibility:
Emphasize the importance of versioning to avoid breaking changes. Describe strategies for maintaining backward compatibility.

### D. Standardized Data Formats (e.g., JSON:API, GraphQL):
Explain how standardized formats promote interoperability. Discuss the pros and cons of different formats.

## Building a Composable Architecture with the Right APIs
Provide practical guidance on designing and implementing APIs for composability. Offer tips for choosing the right API technologies and frameworks. Emphasize the importance of governance and API management.

## Conclusion
Reiterate the importance of “the right kind of API” for true composability. Encourage readers to think beyond basic APIs and embrace DDD, EDA, and other advanced concepts. Offer a call to action (e.g., “Assess your current APIs,” “Contact us for a consultation”).

**Hypothesis:** Organizations that adopt Domain-Driven Design (DDD), Event-Driven Architecture (EDA), proper API versioning, and standardized data formats will achieve significantly greater agility, faster time-to-market, and reduced integration costs compared to those relying on basic CRUD APIs in their composable architecture.