Cosmos is a decentralized network of independent, scalable, and interoperable blockchains.
The Cosmos Hub was the first blockchain to be launched on the Cosmos network. It was built to act as an intermediary between all the independent blockchains created within the Cosmos network, called “zones.” In Cosmos.
"To be the Internet of blockchains"
The vision of Cosmos is to make it easy for developers to build blockchains and break the barriers between blockchains by allowing them to transact with each other. The end goal is to create an Internet of Blockchains, a network of blockchains able to communicate with each other in a decentralized way.
IBC is an acronym for Inter-Blockchain Communication Protocol, which is a protocol for secure message passing between heterogeneous blockchains. IBC makes it possible for many blockchains in the Cosmos ecosystem to communicate.