Microsoft has often been described as having a developer-centric business culture. A great deal of time and money is spent each year on recruiting young university-trained software developers who meet very exacting criteria, and on keeping them in the company. For example, while many software companies often place an entry-level software developer in a cubicle desk within a large office space filled with other cubicles, Microsoft assigns a private or semiprivate closed office to every developer or pair of developers. In addition, key decision makers at every level are either developers or former developers. In a sense, the software developers at Microsoft are considered the "stars" of the company in the same way that the sales staff at IBM are considered the "stars" of their company. This culture is reflected in their hiring process—the "Microsoft interview" is notorious for off-the-wall questions such as "Why is a manhole cover round?" and is a process often mimicked in other organizations. Note that, although they were once ubiquitous, recently fewer interviewers have been using these types of questions. Within Microsoft the expression "eating our own dog food" is used to describe the policy of using the latest Microsoft products inside the company in an effort to test them in "real-world" situations. Only prerelease and beta versions of products are considered dog food. This is usually shortened to just "dog food" and is used as noun, verb, and adjective. For fun, Microsoft also hosts the Microsoft Puzzle Hunt, an annual puzzle hunt (a live puzzle game where teams compete to solve a series of puzzles) held at the Redmond campus. It is a spin-off of the MIT Mystery Hunt.

In an ever-changing world, Microsoft expects its employees to be comfortable with ambiguity. They may not, for example, know with any degree of certainty when a product will ship, what it will be called, or what features will be included. The business culture expects agile thinkers to rapidly adjust to dramatic changes. Microsoft also fosters a general attitude of long-term strategic wariness in its managers, who are expected to be ready for any challenge from the competition or the market. In this frame of mind, being the largest software company in the world is not seen as a form of safety or a guarantee of future success. For instance, future competitors could rise from other industries, or computer hardware companies could try to become less dependent on Microsoft, or consumers could decide not to upgrade their software as often. Microsoft requires its managers to maintain vigilance and sustain a dynamic expansion in new markets.