Vantaggi
What I really enjoy in working at Microsoft is the quality of the people (many of them truly world-class!), the high-performing company culture that pushes everyone to get better every day, the tremendous opportunities for learning/training and the huge impact employees can have on the world through Microsoft's products.
Svantaggi
Like in any big organization, there is some red tape and politics that get in the way of agility. While this is necessary sometimes, overall it puts the company at a disadvantage when compared to smaller, more agile competitors. Promotions take longer and longer to get once above a certain level, so it takes a lot of patience and continuous great work to get ahead. Work-life balance has improved over the past years in general, but it's still an issue.