1. Introduction In the cloud-native era, scaling an architecture often leads to a massive, interconnected system where a single failure can cause a global outage. Cellular Architecture solves this by decomposing the system into independent, isolated failure domains called "cells." In this tutorial, you will build a highly resilient event-driven architecture by combining the cellular pattern with an asynchronous flow (DynamoDB Streams, AWS Lambda, Amazon SNS, and Amazon SQS). Instead of a single monolithic data plane, you will deploy multiple identical infrastructure stamps (cells). A thin edge routing layer will inspect incoming requests and route them to the appropriate cell based on a partition key (such as a Tenant ID). If a poison pill event or a localized infrastructure degradation impacts one cell, the blast radius is strictly contained, ensuring maximum availability for tenants in other cells. This approach provides the ultimate fault isolation boundary for mission-critical distributed systems. 2.…