Training:
The Training (8 week process) is very entry level. This is not training for someone with Technology Sales Experience. If you are coming from another sales organization, the recruiters will oversell you on how effective the Gartner training is. That being said, the training is great for someone straight out of college but I would be cautious if you're coming in with prior Sales experience.
Culture:
Life at Gartner can become somewhat 'Culty'. Management will not tolerate anyone talking bad (or even venting) about their frustrations. Employees who do not 'drink the kool aid' will get phased out of the company. We're required to dress up for team theme weeks 4 times a year during each quarter close (the theme weeks can be fun at first but get tiring over time). There is an odd contradiction between professionalism and the Gartner Culture - We sell ourselves as Strategic Business partners to our clients, but the majority of Account Reps are 23 year old former fraternity brothers running around shooting nerf guns at each other.
Advancement:
Gartner SMB division requires you to move to Fort Myers, Florida. The recruiters tell you that you'll come down to Florida, put in your 2 years then get placed nation wide in one of the many Gartner offices. That advancement path is very possible, and many employees do get placed nationwide, but the SMB Management will fight to keep you in Florida (aka making money for their division). It is much easier to get promoted within the Florida office rather than get placed at another Gartner Office in a bigger city. In short; promotions are VERY achievable, but they will try and keep you in Florida as long as possible.
Random:
No sales-centric CRM . Reps are given an excel spreadsheet with about 200 company names. They have to Google to the companies to find the numbers and contacts themselves, which is very dull and time consuming. The spreadsheet gets shuffled at least once a year, so you have to re-research all new companies halfway through the year. Certain Managers are very process driven - almost robotic - and will require their team to hit very specific metrics (dials per day, meetings per week, ect). Gartner overall is great with PTO, but they get really weird about Reps taking time off for Christmas because it is so close to the end of Gartner's Fiscal year. Lastly, Gartner has hired a lot of Fraternity College Grads in the last 18 months and the environment is becoming very "bro".