The most interesting thing about IOTA is that it doesn't work in the blockchain system. Instead, it uses a data structure called Tangle, which is based on a direct circular diagram. This process is different from a simple blockchain system and can be described as an interconnected chain system. In this system, instead of a continuous chain length, the chain system connects Tangle blocks with other blocks.
The Tangle system is another reason why IOTA transactions are free. Any transaction that is made needs to be approved by the previous two transactions. Fees paid for transactions require the completion of electronic requirements, but when devices become part of the Iota network, each device distributes the requirements of previous transactions in order to free the system from any fees.
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