I applied through an employee referral. The process took 2+ months. I interviewed at Cengage (San Francisco, CA) in Jan 2018
Interview
Standard process - phone screen with hiring manager, followed by 4 first round video interviews, and 2 final round video interviews, all with people that I would be interacting with in the role I was interviewing for. After receiving an offer, there was ample opportunity for me to get all of my questions answered before having to make a decision.
Interview questions [1]
Question 1
Given that it was a strategy role, most of the interviews included some sort of "case question" related to work that I would likely be doing.