Microsoft

Never abbreviate Microsoft. Don't use Microsoft's.
Examples
Microsoft software and services
Microsoft Surface
the Microsoft approach to diversity and inclusion

Exception To avoid awkward wording, it's OK to use Microsoft's occasionally when you're referring to the company itself rather than the trademark or brand name.
Example
Microsoft's privacy policies

Include Microsoft the first time you mention a product or service name in body text. When you list several product names, it's OK to include Microsoft before the first name only.

Exceptions Never include Microsoft before Bing, Skype, Xbox, or Windows.

In general, focus on the customer, and avoid making Microsoft the subject of the sentence. For example, say, "Learn about the options available for upgrading," not "Microsoft offers a variety of options for upgrading." It's OK to use phrasing like we recommend if it helps you avoid awkward wording like it's recommended.

When it's necessary for Microsoft to be the subject, choose the pronouns that best fit your message.

• When the tone is friendly, informative, or inspiring, use we and our.
  Examples
  We believe in what people make possible.
  We recommend that you upgrade to the latest version of the service when it becomes available.

• In formal legal or business content, use it and its.
  Example
  Microsoft and its subsidiaries

• Don't mix pronouns. Don't use we to refer to Microsoft and its as the possessive pronoun.