Blob storage

Blob storage holds binary large objects — images, video, backups, or any unstructured file — as opaque chunks of bytes accessed by key over HTTP. "Blob" is Microsoft Azure's name for what other providers call object storage. It's built for massive scale and direct delivery, not relational queries.

A blob (binary large object) is just an arbitrary sequence of bytes the storage layer doesn't try to interpret. That's the point: it can hold a JPEG, an MP4, a database dump, or a ZIP equally well, addressing each by a key and serving it back over HTTP.

The terminology is mostly vendor branding. Azure markets "Blob Storage," Amazon markets S3 "objects," and Google markets "Cloud Storage" — but conceptually they're the same flat, key-addressed, HTTP-accessed model. Azure adds blob tiers (hot, cool, archive) for cost-vs-access trade-offs, mirroring the hot/cold tiering other providers offer.

Blob storage is the wrong tool when you need transactions, joins, or per-record updates — that's a database's job. It's the right tool for serving and archiving large unstructured files at scale.

Related terms

Object storage

Object storage is a way to store data as discrete objects — the file bytes plus metadata and a unique key — in a flat namespace instead of a file-system hierarchy. It scales to billions of objects, is accessed over HTTP APIs, and underpins most cloud file storage, backups, and static assets.

Bucket

A bucket is a top-level container that holds objects in cloud storage, identified by a globally unique name. It's an Amazon S3 term — since adopted by many S3-compatible services — that sets a namespace and boundary for permissions, region, and configuration. Every stored object belongs to exactly one bucket.

MIME type

A MIME type (media type) is a standardized label like image/png or application/json that tells clients what kind of data a file contains. Sent in the Content-Type header, it tells browsers whether to render, download, or parse a response, and lets servers validate uploads by format.

File hosting

File hosting is a service that stores your files and serves them over the internet at a URL, so you can share or embed them without running your own server. It ranges from simple link-sharing tools to developer platforms with upload APIs, access control, and CDN-backed delivery.

How files.link fits in

If you're weighing Azure for unstructured files, files.link offers the same store-and-serve model with far less setup. Azure Blob Storage alternative.

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