Unlike bitcoin IOTA doesn’t associate with anything related to mining. All coins are pre-mined which means that all are already created and sold during 2014. Another major reason is that IOTA doesn’t use blockchain technology and use its own platform Tangle. In Blockchain, mining is called to the process when the user uses a machine to process a transaction and a fee is deducted, whereas on Tangle will validate your transaction which ultimately becomes cost-free transaction and don’t need to be mined.