Comment by vander_elst

Such consulting companies are on paper quite well suited for these kind of jobs: you can easily ramp and down teams in a matter of weeks, consultants already have experience with your project, they do have experts in all possible areas. Additionally, usually upper management in both companies already know each other so if you need something why don't you go and ask a person you know about this? I actually think it's almost sells itself. Accenture & Co. won't tell you though that the experts will only stay for the first week in the projects (afterwards they need to go and honeypot a new customer), and they won't mention that the developers only need to pass a behavioural interview for getting hired (absolutely no code required) and that they have a constant massive turnover so that people stay usually in your project for 3-6 months, or that there is basically no coder that has more than 3 years of experience.