Two of the world’s leading investment banks are looking at a move into the fast expanding peer-to-peer lending sector, underlining how even established financial institutions are racing to embrace technology to disrupt traditional finance. Société Générale and Goldman Sachs are among several banks discussing a plan to back Aztec Money, an emerging peer-to-peer financing platform that has created an online market place where people can bid for company invoices, according to three people familiar with the project.