Amazon Architecture

From a monolith to the service-oriented template for modern commerce.

On the roadmap:Software Architect · step 5: Learn from the giants

Overview

Amazon pioneered service-oriented architecture and 'you build it, you run it' teams. Dynamo, its highly available key-value store, shaped the NoSQL movement.

Architecture highlights

Two-pizza teams owning services end to end
Dynamo: eventual consistency for availability
Cell-based architecture to limit blast radius
Extensive use of timeouts, retries and backoff

Architecture diagram

Key components

Service mesh of APIs
Every capability exposed via a service interface
Dynamo / DynamoDB
Always-writable key-value storage
SQS / SNS
Asynchronous messaging between services
Cart & checkout
Availability-critical shopping flow

Challenges and trade-offs

Availability over consistency
A cart must accept writes even during partitions; conflicts are reconciled later.
Peak events
Prime Day demands capacity planning and load shedding.
Org-scale coordination
Thousands of services need strict API contracts.

Study: Amazon

Learn how Amazon is built from the people who explain it. Watch first for the picture, then read for the detail.

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Amazon System Design Interview: Design Parking Garage

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