Web3 platforms and decentralisation in the Polkadot ecosystem.
In the Polkadot ecosystem, Parachains are strictly distinct from Relay chains because they are tailor-made to support a wider range of applications and products such as price oracles, token swaps, NFT marketplaces, DAO interfaces, etc.
However, it is the modularity of Relay chains' shared security and interoperability protocols that brings forward a model whereby platforms can integrate each other's functionalities without hitting any form of centralised control or censorship.
An overview of functionalities that can be deployed onto parachains.