The document discusses the costs and bottlenecks associated with digital ad sales, specifically transactional requests for proposals (RFPs). It notes that RFPs require significant time from sales teams, averaging 22.1 hours per team member and accounting for 40% of publisher revenue but also 24% of deals are later lost. It provides data on the number of RFPs publishers respond to each month, the hours and costs associated with different stages of the RFP process, and suggests publishers could be using the 1600 hours spent on RFPs each month on other more productive tasks.