API Composition vs API Orchestration | Key Differences in Microservices
API Composition and API Orchestration are two concepts that most backend engineers hear all the time — but very few people explain the real difference clearly.
In this video, we break down API Composition vs API Orchestration using real microservices and fintech examples. You’ll see how a single user action, like opening a “My Account” screen or onboarding a new customer, can lead to very different backend interaction patterns.
We cover:
• What API Composition really means in microservices
• What API Orchestration actually does
• Why mixing the two leads to slow, fragile systems
• Real fintech examples: dashboards vs onboarding workflows
• Where composition should live (BFF, gateway, GraphQL)
• Where orchestration should live (domain services, workflows)
• Common anti-patterns engineers fall into
If you’re working with microservices, system design, or preparing for backend interviews, this distinction is critical. Understanding where to use composition vs orchestration can clean up your architecture and make systems much easier to evolve.
📌 Related reading:
API Composition vs Orchestration — The Difference That Quietly Decides Your Architecture
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