Blob Storage is a service provided by cloud platforms that allows users to store large amounts of unstructured data, such as images, videos, and documents. It is designed to handle data that doesn't fit neatly into traditional databases, making it ideal for applications that require scalable storage solutions. Users can access their data from anywhere via the internet, and Blob Storage typically offers features like redundancy and security to protect the stored information. This service is commonly used in various industries for backup, archiving, and serving content to applications and websites.