> ## Documentation Index
> Fetch the complete documentation index at: https://notes.kodekloud.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Section Introduction

> This article explores application integration on AWS, highlighting services that facilitate communication between decoupled components in various application architectures.

In this section, we explore the concept of application integration on AWS—a suite of services designed to facilitate communication between decoupled components in microservices, distributed systems, and serverless applications. These services help ensure seamless, reliable interactions across your application architecture.

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  ![The image is an introduction slide showing icons and names of four AWS services: Amazon SQS, Amazon SNS, AWS Step Functions, and AWS AppSync.](https://kodekloud.com/kk-media/image/upload/v1752858446/notes-assets/images/AWS-Certified-Developer-Associate-Section-Introduction/aws-services-introduction-icons.jpg)
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<Callout icon="lightbulb" color="#1CB2FE">
  This lesson focuses on the following AWS services:

  * Amazon SQS (Simple Queue Service)
  * Amazon SNS (Simple Notification Service)
  * AWS Step Functions
  * AWS AppSync
</Callout>

Each of these services plays a critical role in ensuring effective, scalable communication within your AWS-powered applications.

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  <Card title="Watch Video" icon="video" cta="Learn more" href="https://learn.kodekloud.com/user/courses/aws-certified-developer-associate/module/60c267ab-da8b-4408-97f4-b53aad3f4479/lesson/208cabf7-1e86-4495-a196-14feeeebbf0a" />
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