Massively scalable and secure object storage for cloud-native workloads, archives, data lakes, high-performance computing and machine learning
Store and access unstructured data at scale
Azure Blob storage helps you create data lakes for your analytics needs, and provides storage to build powerful cloud-native and mobile apps. Optimise costs with tiered storage for your long-term data, and flexibly scale up for high-performance computing and machine learning workloads.
Scalable, durable and available
Sixteen nines of designed durability with geo-replication and flexibility to scale as needed
Authentication with Azure Active Directory and role-based access control (RBAC), plus encryption at rest and advanced threat protection
Optimised for data lakes
File namespace and multi-protocol access support enabling analytics workloads for data insights
Comprehensive data management
End-to-end lifecycle management, policy-based access control and immutable (WORM) storage
Build powerful cloud-native applications
Blob storage is built from the ground up to support the scale, security and availability needs of mobile, web and cloud-native application developers. Use it as a cornerstone for serverless architectures such as Azure Functions. Blob storage supports the most popular development frameworks, including Java, .NET, Python and Node.js, and is the only cloud storage service that offers a premium, SSD-based object storage tier for low-latency and interactive scenarios.Start building apps with Blob storage
Store petabytes of data, cost-effectively
With multiple storage tiers and automated lifecycle management, store massive amounts of infrequently or rarely accessed data in a cost-efficient way. Replace your tape archives with Blob storage and never worry about migrating across hardware generations.Store your rarely accessed data now
Build powerful data lakes
Azure Data Lake Storage is a highly scalable and cost-effective data lake solution for big data analytics. It combines the power of a high-performance file system with massive scale and economy to help you speed your time to insight. Data Lake Storage extends Azure Blob storage capabilities and is optimised for analytics workloads.Learn more
Scale up for HPC or out for billions of IoT devices
Blob storage meets the demanding, high-throughput requirements of HPC applications while providing the scale necessary to support storage for billions of data points flowing in from IoT endpoints.Read more
Built-in data security
- Microsoft invests more than USD 1 billion annually on cybersecurity research and development.
- We employ more than 3,500 security experts who are dedicated to data security and privacy.
- Azure has more certifications than any other cloud provider. View the comprehensive list.
Flexible pricing including reserved options to meet your cloud storage needs
Choose from four storage tiers based on how often you expect to access the data. Store performance-sensitive data in Premium, frequently accessed data in Hot, infrequently accessed data in Cool and rarely accessed data in Archive. Save significantly by reserving storage capacity.
Get started with Blob storage
Learn how to use Azure Blob storage.
Trusted by companies of all sizes
Powering the autonomous driving future
Audi AG is a leader in premium vehicles and a pioneer in the creation of autonomous vehicles. Learn how Blob storage helped Audi build a powerful, multi-petabyte, scalable simulation environment that accelerated Audi’s innovation in autonomous driving.
Building a global supply chain for sustainable food production
Luc Beerens, Global Sustainable Sourcing Director, Mars Food
"With Transparency-One and Azure, we've transformed our ability to help protect the environment, guarantee high-quality rice to consumers, and improve working conditions for farmers."
CarMax drives online innovation with Azure
Brandon Linton, Solution Architect, Online Systems Platform Team, CarMax
"Azure turned out to be perfect for solving our image storage problems. Azure Storage provided effectively limitless storage with read-accessible geo-replication, so we could deliver increased capability and resilience that was cost-effective."
Azure Blob storage updates, blogs and announcements
Generally available: Copy Blob support over private endpoints in Azure Storage
Public preview: Prevent Shared Key authorization on Azure Storage accounts
Azure Storage account recovery available via portal is now generally available
Azure resource logs for Azure Storage is now in public preview
Azure Storage blob inventory public preview
Azure Data Lake Storage Gen2 recursive access control list (ACL) update is generally available
Policy to control the minimum TLS version used with Azure Storage now generally available
Azure Blob access time tracking and access time-based lifecycle management preview
Azure Blob storage lifecycle management now supports append blobs
Frequently asked questions about Blob storage
A blob is a binary, large object and a storage option for any type of data that you want to store in a binary format. Learn about blob types.
A region is a set of data centres deployed within a latency-defined parameter and connected through a dedicated, regional, low-latency network. Learn more.
You can take advantage of the Data Transfer tool in the Azure portal or compare different data transfer options.
Data in Azure Storage is encrypted and decrypted transparently using 256-bit AES encryption and is FIPS 140-2-compliant. Learn more about Azure Storage encryption.
Set your default account tier in the Azure portal. The Archive tier is available to GPv2 and Blob storage accounts and only available for individual block blobs and append blobs. Read more in the storage account overview.