Vantaggi
Great culture, smart people, excellent benefits, awesome training, no manager (yes, has concept of Career Manager who helps you grow within the company professionally, they are more like mentors/friends and do care for people whom they mentor). As this is consulting firm, managers are more project based. Over all great people to work with. No serious complains. You work hard/smart and eventually get rewarded.
Svantaggi
You might spend periods on bench (without project... but not a big issue) as Avanade is very picky about the projects and do not sign up client by lowering rates just to win (i guess that's Pro actually). Might end up doing lots of travelling (this is pre-condition before joining usually for most positions, unless otherwise clearly stated). Based on project, may end up working long hours (who doesn't now a days)