What is IOTA?
A cryptocurrency with zero transaction fees, high scalability, and no mining centralization/resource expenditure
IOTA is a cryptocurrency that goes "beyond blockchain" by using a newly invented protocol called the Tangle, instead of a blockchain. To send a transaction, a user simply validates two other transactions on the Tangle/network. Since every participant is a transaction validator, there's no need for mining. This solves the major limitations of the blockchain such as fees, scalability, and centralization. IOTA can be used for value transfers and data transfers alike, and intends to be the settlement layer for the internet-of-things