This paper examines the financial stability implications arising from securitization markets, with one eye on the past and another on the future. The paper begins by deriving a number of “lessons learned” based on an examination of key industry developments in the years before the crisis. Emphasis is placed on the various ways in which securitization markets dramatically changed shape in the years preceding the crisis, vis-à-vis their earlier (simpler) incarnation. Current impediments to securitization markets are then discussed, including a treatment of various regulatory initiatives, the operational infrastructure of securitization markets, and related official sector intervention. Finally, a broad suite of policy recommendations is presented to address the factors that either contributed to the crisis or may currently be posing obstacles to growth-supportive, sustainable securitization markets. These proposals are guided by the objective of preserving the beneficial features of securitization while mitigating those that pose a potential risk to financial stability. Like most forms of financial innovation, there are cost and benefits associated with the securitization of cash flows. From a conceptual perspective, a sound and efficient market for securitization can be supportive of the financial system and broader economy in various ways such as lowering funding costs and improving the capital utilization of financial institutions—benefits which may be passed onto borrowers; helping issuers and investors diversify risk; and transforming pools of illiquid assets into tradable securities, thus stimulating the flow of credit—an issue of particular relevance for some European countries. However, these features need to be weighed against the potential costs, including the risk that securitization contributes to excessive credit growth in and outside of the formal banking system; principal-agent problems that amplify perverse incentives; the complexity and opaqueness of certain products which make efficient pricing problematic; and the heavy reliance of the industry on credit ratings.