Cryptopedia
ATOM
Cosmos is a decentralized network of independent parallel blockchains, each powered by BFT consensus algorithms like Tendermint consensus. It officially launched in March 2019.
In other words, Cosmos is an eco of blockchains that can scale and interoperate with each other. Before Cosmos, blockchains were siloed and unable to communicate with each other.
They were hard to build and could only handle a small amount of transactions per second. Cosmos solves these problems with a new technological vision.