Azure Blob Storage Cold Tier is now generally available. It is a new online access tier that is the most cost-effective Azure Blob offering for storing infrequently accessed data with long-term retention requirements, while providing instant access.
Azure Blob Storage is optimized for storing massive amounts of unstructured data. With blob access tiers, you can store your data most cost-effectively based on how frequently it will be accessed and how long it will be retained.
The pricing of the cold tier storage option lies between the cool and archive tiers, and it follows a 90-day early deletion policy. You can seamlessly utilize the cold tier in the same way as the hot and cool tiers, through REST API, SDKs, tools, and lifecycle management policies.
Refer to the blog and documentation for additional details. You can find pricing information on the Azure Blob Storage pricing.