Microsoft is currently the 3rd largest company by market cap, with several strong ties to the blockchain industry.

Enterprise blockchain: Microsoft offers several blockchain services to developers. Most notably, it offers managed blockchain services through its Azure platform, featuring extensive support for Quorum.

It also offers a NEO blockchain kit for .NET developers, plus a decentralized ID platform via ION (a second layer network for the Bitcoin blockchain).

Internal use: Microsoft has used blockchain internally to handle XBOX Live royalties. It is also a member of several coalitions and consortiums, including the Enterprise Ethereum Alliance, the InterWork Alliance, and Hyperleder.

Retail services: Microsoft supports Bitcoin payments in its store, through it has briefly disabled payments at times.

Investments: Microsoft has not invested in Bitcoin, cryptocurrencies, or crypto funds. It is unclear whether it backs any crypto startups.

Anti-crypto activities: Microsoft's Bing search engine banned cryptocurrency-related ads beginning in June 2018, following similar decisions by other big tech companies like Twitter and Google.

Executive sentiments: Microsoft President Brad Smith stated this year that Microsoft is unlikely to purchase Bitcoin following Tesla's BTC purchase in February. He did not express his stance toward Bitcoin.

Elsewhere, Microsoft founder Bill Gates has reportedly expressed disinterest in Bitcoin, with statements ranging from negative to neutral. Gates has criticized Bitcoin's energy usage and lack of traceability.

Bottom line: Microsoft has thoroughly adopted blockchain for enterprise purposes, and it has also introduced limited support for Bitcoin payments.