It was about what I was expecting for the interview process. Microsoft scheduled five interview blocks at their campus, with the fifth being "as appropriate."

Each interviewer was primarily interested in evaluating how I thought through the problem, as much as the answer I arrived at.

There was plenty of conversation working through problems and whiteboarding the solutions as well.

Overall, it was much more enjoyable than I thought it would have been.

Design a shopping cart.

Defend your decisions.

Additionally, consider the following:

• String compression algorithm
• Design a system to scale to 10,000 users
• Word reverse with preserved white space