An in-depth discussion and analysis of the impact of electronic execution requirements on OTC derivatives markets that were mandated by the Dodd-Frank Act. The paper explores and analyzes whether the market structure being developed by the CFTC to implement these requirements will meet the CFTC’s key goals: increase the efficiency of the market by reducing transaction costs, improving access to markets and increasing transparency. The paper also assesses the costs and expenses that market participants and ultimately end-users are likely to bear as a result of the mandate’s implementation. The analysis was developed by ISDA staff and consultants in conjunction with NERA Economic Consulting.