This can be challenging without a system to:
An agency management system can share knowledge with your entire team and enable them to understand which agencies have done great work and might be ideal for a particular assignment.
An agency database requires some resourcing and expertise. A purpose-built system is always best and can alleviate some of the resourcing requirements. One key result of this process is that a successful agency can be rewarded more work, therefore generating more success. Also, niche agencies can be quickly identified and engaged. The type of system can also quickly identify and resolve any potential issues surrounding the selection process.