If you are considering the Ethereum.org website, it is actually the decentralized platform which only runs the smart contracts which are applications. These applications are running exactly as the programmed without a possibility of censorship, downtime, third party interference or fraud. They are also running on the custom built blockchain which is actually an extremely powerful shared global infrastructure moving value around and as well as represent the property ownership.
At the same time, it can enable all the developers in order to make markets, store registries of promises or debts, move funds regarding the instructions without counterparty or middle man risk. It makes a tradeable digital token which can be greatly used as the currency, a virtual share, a representation of an asset, a proof of the membership and also all. Such kinds of the tokens are using the standard coin API so the contract of the users would be automatically compatible with any of your wallet, other contract or also replace using this standard.