Skip Navigation

Azure Blob Storage

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 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 Azure Blob Storage

Get instant access and $200 credit by signing up for an Azure free account.

Create a storage account.

Learn to use Azure Blob storage with best practices, tutorials and other documentation.

Trusted by companies of all sizes

"Azure Blob Storage just works perfectly from an operational standpoint. It allows us to do some things that make our development faster and seamless. We're constantly developing applications in the test environment, which is just simple."

Mike Dunlop, President and Founder, Net-Inspect

Building a global supply chain for sustainable food production

"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."

Luc Beerens, Global Sustainable Sourcing Director, Mars Food

CarMax drives online innovation with Azure

"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."

Brandon Linton, Solution Architect, Online Systems Platform Team, CarMax

Azure Blob storage updates, blogs and announcements

Frequently asked questions about Azure 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 datacentres 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.

Ready when you are—let us set up your Azure free account

Can we help you?