AWS, Cloud Computing

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Integrating Amazon SNS and Amazon SQS for Efficient Application Integration

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The importance of seamless application communication cannot be overstated in the constantly changing world of cloud computing and distributed systems. It might not be easy to navigate the complexities of application integration. Still, Amazon Web Services (AWS) provides two effective tools to make the process easier: Amazon Simple Notification Service (SNS) and Amazon Simple Queue Service (SQS). In this blog, we’ll explore the worlds of Amazon SNS and Amazon SQS to learn about their benefits, use cases, and when to pick one.

Introduction to Amazon SNS (Simplicity in Broadcasting)

It is possible to publish messages from a single application to several recipients using a messaging service called Amazon Simple Notification Service. The publish-subscribe paradigm is employed, making it ideal for scenarios requiring the effective and scalable distribution of information to multiple subscribers.

The ability to support several protocols, such as HTTP, HTTPS, email, SMS, and more, makes Amazon SNS special. This flexibility enables messages to be sent to a wide range of endpoints, meeting the various communication needs of modern applications.

Amazon SNS performs well in scenarios when alerts and updates are needed quickly. Let’s say an online retailer wants to let customers know about order updates or flash sales. Using Amazon SNS, the platform may easily and swiftly distribute these messages to millions or even thousands of users in almost real-time.

However, Amazon SNS does have its limitations. Since it lacks message persistence, a message could be lost if a subscriber is absent when it is sent. For this reason, Amazon SNS is less suitable in scenarios where consistent message delivery is essential.

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Introduction to Amazon SQS (Queuing for Consistency)

Amazon Simple Queue Service is a managed message queuing service located on the opposite end of the integration spectrum. Amazon SQS is the best choice when messages must be processed dependably and systematically because it adheres to the point-to-point communication model.

Amazon SQS provides persistent, long-lasting message storage. No message is lost because it is queued until a consumer application successfully processes it. As a result, Amazon SQS is a good choice for applications that demand great consistency and reliability.

Imagine an order processing system that has to handle many incoming orders. The order processing workflow can be made consistent, and race situations can be avoided by employing Amazon SQS to guarantee that each order is processed in the order that it was received.

Amazon SQS ensures message durability and order; nevertheless, a slight delay may occur because messages are handled sequentially instead of Amazon SNS. Amazon SQS is, therefore, the preferred technique for applications that prioritize consistency over low-latency real-time communication.

Architecture Diagram


Selecting the appropriate service for the task

Whether to use Amazon SNS or Amazon SQS ultimately depends on the specific needs of your application and the kinds of communication patterns involved.

Amazon SNS is better if your application needs real-time communication and can tolerate the odd message loss. Because it can transmit messages to multiple users simultaneously, it is ideal for social networking activity, live event announcements, and news updates.

However, if your application requires consistent, well-organized message processing with guaranteed delivery and no message loss, Amazon SQS is the best option. Amazon SQS performs exceptionally well in order processing, task scheduling, and background job execution.


Amazon SNS and Amazon SQS can cooperate in a successful integration strategy rather than being mutually exclusive. By leveraging both benefits, applications can balance reliable, structured message processing and real-time communication.

When creating your application integration strategy on AWS, thoroughly consider your communication requirements and choose the solution for each use case. Whether you go with Amazon SNS due to its simple broadcasting features or Amazon SQS because of its excellent queuing capabilities, AWS provides the foundation for a robust and expandable integration architecture.

Drop a query if you have any questions regarding Amazon SNS and Amazon SQS and we will get back to you quickly.

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1. How are Amazon SNS and Amazon SQS billing handled?

ANS: – The price model for Amazon SNS and Amazon SQS is pay-as-you-go. You are paid according to the volume of data transferred and requests. You can find comprehensive pricing details on the AWS website.

2. What are the differences between Amazon SNS and Amazon SQS message persistence?

ANS: – Messages on Amazon SNS are delivered in real-time to subscribers; they are not stored. Messages in Amazon SQS are durable and reliable because they are kept in the queue indefinitely until a consumer processes them.

WRITTEN BY Vaishali Bhawsar

Vaishali is working as a Research Associate in CloudThat Technologies. She has good knowledge of Networking, Linux systems & C language, and currently working on various AWS projects along with, Terraform, Docker, and Ansible. She enjoys painting and cooking during her free time.



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