Move is a programming language for blockchain developed by Meta and now used by Aptos (a high-speed blockchain). Move emphasizes asset safety through a type system preventing common smart contract bugs (reentrancy, double-spend). Aptos is a blockchain where Move contracts run. It's designed for high throughput (10k+ transactions/sec) and low cost. Developers build decentralized apps (DEX, NFT platforms, financial protocols) using Move.