Pros: A large company with lots of different opportunities and benefits.

Cons: I was laid off during my training period.

Pros: Here are the metrics for the bold claim in the review title: * Impact of work * Mentorship * Benefits Impact of Work: There are over two billion people on the platform. Even if you're working on advanced business tools like I was, you're still going to have millions of users. This isn't the usage your middle school blog got. Mentorship: Code review could be a little exhausting. It was the intensity of needing to learn at a rapid pace to reach a level of code quality that the world-class engineers on my team would be willing to accept. It was a summer-long, self-refactoring session that has been the most valuable educational experience I've had so far in advanced coding techniques and conventions. Benefits: Highest salary, (nice) corporate housing, insane events (who else rents out a section of the Santa Cruz Boardwalk??). I do say "objectively" in the title. If you're interested in a niche technology field, a certain industry, etc., then you may have a different "subjective" best internship. Also subjectively, there are thousands and thousands of engineers at FB, and teams are bound to have different cultures. Nevertheless, I still feel comfortable saying that this is objectively the best internship.

Cons: When there are that many engineers working on the same thing, you're bound to have some merge conflicts.

Pros: Good perks, empathetic people, and good food.

Cons: Bad politics and politics; bad performance evaluation tactics, which cause stress. The HR department is incompetent.