Securitisation is the term used to refer to a transaction that enables a lender - often a bank - to refinance a set of loans/assets (e.g. mortgages, auto leases, consumer loans, credit cards) by converting them into securities that others can invest in. The lender pools a portfolio of its loans into a set of securities tailored to different investor risk/reward characteristics. End investors are then repaid by the cash-flows generated by the underlying loans.
Relevant documents:
Capital Markets Union: an Action Plan to boost business funding and investment financing
New EU Rules to Promote Investments in Infrastructure Projects
Call for Evidence: EU Regulatory Framework for Financial Services
Questions and Answers on the Action Plan on building a Capital Markets Union