Amazon Prime Day 2025 was the biggest Amazon Prime Day shopping event ever, setting records for both sales volume and total items sold during the 4-day event. Prime members saved billions while shopping Amazon’s millions of deals during the event.

This year marked a significant transformation in the Prime Day experience through advancements in the generative AI offerings from Amazon and AWS. Customers used Alexa+—the Amazon next-generation personal assistant now available in early access to millions of customers—along with the AI-powered shopping assistant, Rufus, and AI Shopping Guides. These features, built on more than 15 years of cloud innovation and machine learning expertise from AWS, combined with deep retail and consumer experience from Amazon, helped customers quickly discover deals and get product information, complementing the fast, free delivery that Prime members enjoy year-round.

As part of our annual tradition to tell you about how AWS powered Prime Day for record-breaking sales, I want to share the services and chart-topping metrics from AWS that made your amazing shopping experience possible.

Prime Day 2025 – all the numbers
During the weeks leading up to big shopping events like Prime Day, Amazon fulfillment centers and delivery stations work to get ready and ensure operations run efficiently and safely. For example, the Amazon automated storage and retrieval system (ASRS) operates a global fleet of industrial mobile robots that move goods around Amazon fulfillment centers.

AWS Outposts, a fully managed service that extends the AWS experience on-premises, powers software applications that manage the command-and-control of Amazon ASRS and supports same-day and next-day deliveries through low-latency processing of critical robotic commands.

During Prime Day 2025, AWS Outposts at one of the largest Amazon fulfillment centers sent more than 524 million commands to over 7,000 robots, reaching peak volumes of 8 million commands per hour—a 160 percent increase compared to Prime Day 2024.

Here are some more interesting, mind-blowing metrics:

• Amazon Elastic Compute Cloud (Amazon EC2) – During Prime Day 2025, AWS Graviton, a family of processors designed to deliver the best price performance for cloud workloads running in Amazon EC2, powered more than 40 percent of the Amazon EC2 compute used by Amazon.com. Amazon also deployed over 87,000 AWS Inferentia and AWS Trainium chips – custom silicon chips for deep learning and generative AI training and inference – to power Amazon Rufus for Prime Day.
• Amazon SageMaker AI — Amazon SageMaker AI, a fully managed service that brings together a broad set of tools to enable high-performance, low-cost machine learning (ML), processed more than 626 billion inference requests during Prime Day 2025.
• Amazon Elastic Container Service (Amazon ECS) and AWS Fargate– Amazon Elastic Container Service (Amazon ECS) is a fully managed container orchestration service that works seamlessly with AWS Fargate, a serverless compute engine for containers. During Prime Day 2025, Amazon ECS launched an average of 18.4 million tasks per day on AWS Fargate, representing a 77 percent increase from the previous year’s Prime Day average.
• AWS Fault Injection Service (AWS FIS) – We ran over 6,800 AWS FIS experiments—over eight times more than we conducted in 2024—to test resilience and ensure Amazon.com remains highly available on Prime Day. This significant increase was made possible by two improvements: new Amazon ECS support for network fault injection experiments on AWS Fargate, and the integration of FIS testing in continuous integration and continuous delivery (CI/CD) pipelines.
• AWS Lambda – AWS Lambda, a serverless compute service that lets you run code without managing infrastructure, handled over 1.7 trillion invocations per day during Prime Day 2025.
• Amazon API Gateway – During Prime Day 2025, Amazon API Gateway, a fully managed service that makes it easy to create, maintain, and secure APIs at any scale, processed over 1 trillion internal service requests—a 30 percent increase in requests on average per day compared to Prime Day 2024.
• Amazon CloudFront – Amazon CloudFront, a content delivery network (CDN) service that securely delivers content with low latency and high transfer speeds, delivered over 3 trillion HTTP requests during the global week of Prime Day 2025, a 43 percent increase in requests compared to Prime Day 2024.
• Amazon Elastic Block Store (Amazon EBS) – During Prime Day 2025, Amazon EBS, our high-performance block storage service, peaked at 20.3 trillion I/O operations, moving up to an exabyte of data daily.
• Amazon Aurora – On Prime Day, Amazon Aurora, a relational database management system (RDBMS) built for high performance and availability at global scale for PostgreSQL, MySQL, and DSQL, processed 500 billion transactions, stored 4,071 terabytes of data, and transferred 999 terabytes of data.
• Amazon DynamoDB – Amazon DynamoDB, a serverless, fully managed, distributed NoSQL database, powers multiple high-traffic Amazon properties and systems including Alexa, the Amazon.com sites, and all Amazon fulfillment centers. Over the course of Prime Day, these sources made tens of trillions of calls to the DynamoDB API. DynamoDB maintained high availability while delivering single-digit millisecond responses and peaking at 151 million requests per second.
• Amazon ElastiCache – During Prime Day, Amazon ElastiCache, a fully managed caching service delivering microsecond latency, peaked at serving over 1.5 quadrillion daily requests and over 1.4 trillion requests in a minute.
• Amazon Kinesis Data Streams – Amazon Kinesis Data Streams, a fully managed serverless data streaming service, processed a peak of 807 million records per second during Prime Day 2025.
• Amazon Simple Queue Service (Amazon SQS) – During Prime Day 2025, Amazon SQS – a fully managed message queuing service for microservices, distributed systems, and serverless applications – set a new peak traffic record of 166 million messages per second.
• Amazon GuardDuty – During Prime Day 2025, Amazon GuardDuty, an intelligent threat detection service, monitored an average of 8.9 trillion log events per hour, a 48.9 percent increase from last year’s Prime Day.
• AWS CloudTrail – AWS CloudTrail, which tracks user activity and API usage on AWS, as well as in hybrid and multicloud environments, processed over 2.5 trillion events during Prime Day 2025, compared to 976 billion events in 2024.

Prepare to scale
If you’re preparing for similar business-critical events, product launches, and migrations, I recommend that you take advantage of our newly branded AWS Countdown (formerly known as AWS Infrastructure Event Management, or IEM). This comprehensive support program helps assess operational readiness, identify and mitigate risks, and plan capacity, using proven playbooks developed by AWS experts. We’ve expanded to include: generative AI implementation support to help you confidently launch and scale AI initiatives; migration and modernization support, including mainframe modernization; and infrastructure optimization for specialized sectors including election systems, retail operations, healthcare services, and sports and gaming events.

I look forward to seeing what other records will be broken next year!

— Channy