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Azure Blob storage is Microsoft's object storage solution for the cloud. Blob storage is optimized for storing massive amounts of unstructured data. Unstructured data is data that doesn't adhere to a particular data model or definition, such as text or binary data.
Blob storage is designed for:
Users or client applications can access objects in Blob storage via HTTP/HTTPS, from anywhere in the world. Objects in Blob storage are accessible via the Azure Storage REST API, Azure PowerShell, Azure CLI, or an Azure Storage client library. Client libraries are available for different languages, including:
Blob storage supports Azure Data Lake Storage Gen2, Microsoft's enterprise big data analytics solution for the cloud. Azure Data Lake Storage Gen2 offers a hierarchical file system as well as the advantages of Blob storage, including:
For more information about Data Lake Storage Gen2, see Introduction to Azure Data Lake Storage Gen2.
Blob storage offers three types of resources:
The following diagram shows the relationship between these resources.
A storage account provides a unique namespace in Azure for your data. Every object that you store in Azure Storage has an address that includes your unique account name. The combination of the account name and the Azure Storage blob endpoint forms the base address for the objects in your storage account.
For example, if your storage account is named mystorageaccount, then the default endpoint for Blob storage is:
A container organizes a set of blobs, similar to a directory in a file system. A storage account can include an unlimited number of containers, and a container can store an unlimited number of blobs.
The container name must be lowercase. For more information about naming containers, see Naming and Referencing Containers, Blobs, and Metadata.
Azure Storage supports three types of blobs:
For more information about the different types of blobs, see Understanding Block Blobs, Append Blobs, and Page Blobs.