I worked with GCSC to set up a global lead generation team for our event management startup. They made what seemed like a pretty daunting task very easy and I was thrilled with the results. GCSC guided us through the process and took care of system selection and set-up, recruitment of the right staff, on boarding and training.  We now have a world class lead generation system and it paid for itself in the first three months. These guys really know their stuff and are great to work with.