When it comes to their data, Polakadot builders face a false choice: values or usability. Recent AWS outages exposed just how unusable Big Cloud is for Web3, because it’s built on the principles we reject: vendor dependency and opaque systems. But to actually decentralize chain, dapp, and agent data, builders need an onchain cloud that’s verifiable, programmable, and interoperable across environments. This talk unpacks what onchain data services mean for Polkadot developers –– data provenance and access you can prove, programmable services like payments and retrieval, and trustless data sovereignty.