This Practice Note summarises the structure of commercial mortgage-backed securities transactions and the key parties, documents and terms involved in such transactions. As with all financing techniques and transactions there are numerous permutations as to how the precise terms of each such transaction operates which are beyond the scope of this Practice Note. In addition, unless expressly set out, the requirements of particular jurisdictions, including in particular the requirements of the United States, with respect to a commercial mortgage-backed securities transaction are not specifically considered.