Running a Drupal Shop since 8 years now, we have to face scaling from 1M€ of annual revenue to 12M€. During this session I'll explain scaling issues we've faced and how we've solved them : 

How to hire and organize teams
How adress big clients and their expectations
How to respond to big RFPs
What KPI introduce and how to follow your teams : quality, productivity, ressources management
How specific those scales issues are to Drupal
But i'll also talk about failures : 

Biggest mistakes we've done 
Why did we loose some of the most interesting RFPs
Why some of our best employees left us despite good salary and interesting projects