Demystifying Amazon S3 Pricing: A Comprehensive Guide

George Pals
4 min readJun 12, 2023

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Amazon Simple Storage Service (S3) is a highly popular and versatile object storage service offered by Amazon Web Services (AWS). S3 provides developers and businesses with secure, durable, and scalable storage for various use cases, such as data backup, archiving, content distribution, and data lakes. Understanding the pricing structure of S3 is essential for optimizing costs and maximizing the value of this service. In this blog post, we will explore the intricacies of Amazon S3 pricing and shed light on its key components.

1. Storage Pricing

S3 Storage Comparison

S3 offers multiple storage classes, each designed to cater to different data access patterns and cost requirements. The pricing varies based on the storage class chosen for your objects. Here are the main storage classes and their associated costs:

1.1 Amazon S3 Standard

Amazon S3 Standard is the default storage class and offers high durability, availability, and low latency. It is suitable for frequently accessed data or dynamic websites.

Storage Pricing: The pricing for Amazon S3 Standard is based on a tiered pricing model, which means the per-GB cost decreases as the total stored data increases.

1.2. Amazon S3 Intelligent-Tiering

Amazon S3 Intelligent-Tiering automatically optimizes costs by moving objects between two access tiers: frequent access and infrequent access. This storage class is ideal for data with changing access patterns.

Storage Pricing: The cost is slightly higher compared to Amazon S3 Standard, as Intelligent-Tiering provides additional tiering capabilities and automation.

1.3. Amazon S3 Standard-IA (Infrequent Access)

Amazon S3 Standard-IA is designed for data that is accessed less frequently but still requires immediate availability. It is suitable for backups, long-term storage, and disaster recovery scenarios.

Storage Pricing: The cost per GB is lower than Amazon S3 Standard, but there is a retrieval fee associated with accessing the data.

1.4. Amazon S3 One Zone-IA

Amazon S3 One Zone-IA is similar to Standard-IA but stores data in a single availability zone, offering a lower-cost option for data that can be easily recreated.

Storage Pricing: The per-GB storage cost is lower than both Amazon S3 Standard and Standard-IA, but it comes with the risk of data loss in case of a zone failure.

1.5. Amazon S3 Glacier and Glacier Deep Archive

Amazon S3 Glacier provides long-term archival storage for infrequently accessed data, while Glacier Deep Archive is designed for long-term retention of data that is accessed once or twice a year.

Storage Pricing: Glacier and Glacier Deep Archive have significantly lower storage costs compared to other classes but charge additional fees for retrieval and data transfer.

2. Data Transfer Pricing

DataTransfer Free
Data Transfer Chargable

In addition to storage costs, data transfer fees apply when moving data in and out of Amazon S3. The pricing structure for data transfer is as follows:

Data Transfer In: There is no charge for data transfer into Amazon S3.

Data Transfer Out: The cost depends on the data transfer destination and the total volume of data transferred.

2.1. Data Transfer to the Internet

Outbound Data Transfer: Amazon S3 charges a tiered pricing model based on the total amount of data transferred out to the internet.

2.2. Data Transfer within the AWS Network

Inbound and Outbound Data Transfer: Moving data between Amazon S3 and other AWS services within the same AWS region is generally free of charge.

3. Request Pricing

S3 Request and Data Retrievals Cost Comparison

Apart from storage and data transfer, Amazon S3 pricing also includes charges for requests made to retrieve or interact with your data. Here are the key aspects of request pricing:

GET and SELECT Requests: Amazon S3 charges per thousand GET and SELECT requests made to retrieve data.

PUT, COPY, POST, and LIST Requests: Charges apply per thousand requests made for putting, copying, posting, or listing data.

4. Additional Features and Considerations

Amazon S3 offers additional features and options that may incur additional costs. Some notable ones include:

Transfer Acceleration: A fast and secure way to accelerate data uploads to S3, which has its separate pricing based on the volume of data transferred.

Cross-Region Replication: Enabling replication of data across AWS regions incurs additional costs for both storage and data transfer.

Understanding the pricing structure of Amazon S3 is crucial for optimizing costs and effectively utilizing this powerful object storage service. By choosing the appropriate storage class, managing data transfer efficiently, and considering the cost implications of various requests, businesses can leverage the benefits of S3 while keeping expenses under control. As with any AWS service, regularly monitoring your usage and leveraging cost management tools can help you make informed decisions and ensure that your S3 costs align with your budget and requirements.

Disclaimer: The pricing information provided in this blog is based on the information available at the time of writing. Please refer to the official AWS S3 Pricing page ( https://aws.amazon.com/s3/pricing/) for the most up-to-date and accurate pricing details.

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