Store and retrieve unstructured data like file uploads, images, documents, JSON, and cache-like state with Netlify Blobs. It is a zero-config key/value store accessible from Functions, Edge Functions, and Build Plugins. Reach for this when you handle a file or image upload, persist Background Function output like sitemaps or processed media, cache API responses, store per-deploy assets, or need a simple key/value store from a serverless function. Covers creating site and deploy stores, reading and writing values and JSON, listing keys with metadata, atomic conditional writes, consistency modes, region selection, and file-based uploads. Not for per-user, transactional, or relational data — use Netlify DB for that.