IoT is the future, whether we like it or not. More and more of everyday things are being connected to the internet. IOTA is a coin that mainly focuses on IoT. It has no transaction fees, lightning fast transactions (the bigger the community, faster the transactions will be), no need for miners, no added electricity consumption
And it uses tangle, not blockchain. Its a third-generation crypto currency.
It is worth investing in because it still isnt fully released. We can expect lots of gains in 2018.
One thing I do like about ITC is that they use DAG+PBFT which is fast and scalable. The problem with IOTA is that its architecture is centralized. ITC solves those problems while providing more security. they even had a meeting with Bosch recently too.
good comparison read:
https://www.huffingtonpost.com/entry/a-beginners-guide-to-iot-chain-the-iota-of-china_us_5a4a4edee4b06cd2bd03e183