We wanna know

Where to buy IOTA?

Short answer: Not many places have it at the moment, only a few exchanges like Binance or Bitfinex.

What is IOTA?

website: https://iota.org/
wikipedia: https://en.wikipedia.org/wiki/IOTA_(technology)

In this new autonomous Machine Economy IOTA will be the backbone. The Tangle ledger is able to settle transactions with zero fees so devices can trade exact amounts of resources on-demand, as well as store data from sensors and dataloggers securely and verified on the ledger.

So IOTA is all about data storage and it doesn't use or need a blockchain but runs on it's own ledger called Tangle. The exciting thing about this is there are no transaction fees so this has taken miners out of the equation completely.

Microsoft NOT a partner

In early December 2017, IOTA surged in news about a partnership with Microsoft but it was since announced that Microsoft is more a participant than an official partner.

In an interview with IOTA co-founder Dominik Schiener, he clarified:

We have never mentioned that any of the companies which are participating in the marketplace are our ‘partners. We call them participants. We are in touch with multiple divisions at Microsoft (Chicago, Paris, Munich). We are hosting two meetups today in Chicago and on Thursday in Paris which are hosted at the Microsoft offices.

source: https://thenextweb.com/hardfork/2017/12/12/iota-partnership-microsoft-marketplace/