Amazon Simple Queue Service

Definition of Amazon Simple Queue Service

Amazon Simple Queue Service (SQS) is a fully managed message queuing service provided by Amazon Web Services (AWS). It enables the decoupling of components in a cloud application, allowing for secure, reliable, and scalable communication between them. SQS simplifies the management of messaging traffic and ensures the successful delivery of messages, even during high volume periods.


The phonetics of the keyword “Amazon Simple Queue Service” can be represented as: /ˈæməˌzɒn ˈsɪmpl kjuː ˈsɜrvɪs/.

Key Takeaways

  1. Amazon Simple Queue Service (SQS) is a fully managed, scalable, and highly available message queuing service that enables asynchronous communication between different components of an application.
  2. SQS provides two types of message queues, Standard Queues with at-least-once delivery and unlimited throughput, and FIFO (First-In-First-Out) Queues that ensure exactly-once processing and maintain the order of messages.
  3. With SQS, you can effectively decouple and scale microservices, distributed systems, and serverless applications, enabling higher fault tolerance, easier management, and cost optimization.

Importance of Amazon Simple Queue Service

Amazon Simple Queue Service (SQS) is a vital managed message queuing service provided by Amazon Web Services (AWS) that enables the decoupling of components within a cloud application, thereby ensuring their seamless communication.

The importance of this technology lies in its ability to transmit any volume of data securely and reliably between various application components, without the need for complex systems or manual interference.

By streamlining the flow of information, it enhances the overall efficiency and fault tolerance of an application.

Furthermore, SQS enables scalability and ensures that messages are processed and delivered in a timely manner, contributing to optimal resource utilization and the powerful performance of cloud-based applications.


Amazon Simple Queue Service (SQS) is designed to enhance and simplify the message communication and processing within distributed applications. It serves as a reliable and scalable hosted message queue service that allows seamless and orderly management of messages between different, independent application components.

By connecting various components of a system, Amazon SQS ensures that each part can operate independently while still maintaining effective communication with one another, thereby improving the overall efficiency and fault tolerance within a distributed architecture. In practice, Amazon SQS acts as a buffer between components to handle varying loads, temporary failures, and maintenance periods.

It stores and processes messages using a “first in, first out” (FIFO) queue to ensure that the exact order of communication is maintained. This way, each message is delivered at least once, preventing data loss and maintaining data integrity.

As a managed service, Amazon SQS automatically scales to handle any volume of messages, adjusting to the needs of the system without the need for additional infrastructure or management tasks. Its purpose is to provide a cost-effective and flexible solution for businesses in building robust, distributed applications, making it a pivotal tool in the world of cloud computing.

Examples of Amazon Simple Queue Service

Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables decoupling of microservices, distributed systems, and serverless applications. Here are three real-world examples of companies using Amazon SQS:

Netflix:Netflix, the world’s leading internet entertainment service, uses Amazon SQS to decouple and streamline their internal operations and microservices across content generation, customer interactions, and billing. By utilizing SQS, Netflix ensures that its system architecture can accommodate millions of requests, messages, and workloads every second without requiring the microservices to wait for processing.

T-Mobile:T-Mobile, one of the largest telecommunication companies in the United States, uses Amazon SQS for several purposes. By implementing SQS in their systems, they can ensure the smooth flow of messages to different systems across the organization without overwhelming them. For example, SQS helps T-Mobile to coordinate notifications, maintain call details, customer lineage, and update account information across various internal systems in a reliably and efficiently manner.

Expedia:Expedia, an online travel platform, adopted Amazon SQS to manage large volumes of data, such as travel bookings, flight information, hotel reservations, and customer communications. Using SQS has allowed Expedia to improve the scalability and performance of their system by relieving the pressure of handling millions of messages and tasks daily. This ensures smooth operations while minimizing the chance of message loss and delays in delivering important information to their users.

Amazon Simple Queue Service FAQs

What is Amazon Simple Queue Service (SQS)?

Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications. SQS eliminates the complexity and overhead associated with managing and operating message oriented middleware, and empowers developers to focus on differentiating work.

What are the key features of Amazon SQS?

Amazon SQS offers various features including at-least-once delivery, visibility timeouts, message retention, and event-driven processing with Amazon Lambda, among others. Additionally, SQS’s two types of message queues – Standard Queue and FIFO Queue – cater to different use cases and needs.

How much does Amazon SQS cost?

Amazon SQS pricing is based on the number of requests made to the service, the amount of data transferred, and the features utilized. You can find detailed pricing information on the Amazon SQS Pricing page on the AWS website.

How do I get started with Amazon SQS?

To get started with Amazon SQS, you can sign up for an AWS account, create a new queue in the AWS Management Console, and start sending and receiving messages using the various supported SDKs or the Amazon SQS API.

What are the main differences between Amazon SQS and Amazon SNS?

Amazon SQS is a message queuing service, while Amazon SNS is a publish-subscribe messaging service. Amazon SQS focuses on delivering messages to multiple independent components, whereas Amazon SNS is designed for sending notifications to multiple subscribers such as email, SMS, and HTTP endpoints, among others.

How is Amazon SQS integrated with other AWS services?

Amazon SQS integrates with various AWS services such as Amazon S3 for sending messages containing large payloads, AWS Lambda for event-driven processing, Amazon SNS for message fan-out, and others. This enables you to build diverse, distributed applications with seamless connectivity and interaction.

Related Technology Terms

  • Message Queuing
  • Distributed System
  • Scalability
  • FIFO Queues
  • Visibility Timeout

Sources for More Information


About The Authors

The DevX Technology Glossary is reviewed by technology experts and writers from our community. Terms and definitions continue to go under updates to stay relevant and up-to-date. These experts help us maintain the almost 10,000+ technology terms on DevX. Our reviewers have a strong technical background in software development, engineering, and startup businesses. They are experts with real-world experience working in the tech industry and academia.

See our full expert review panel.

These experts include:


About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

More Technology Terms

Technology Glossary

Table of Contents