Software escrow is a legal arrangement where a copy of the software's source code and documentation is deposited with an independent third-party escrow agent. This acts as a safety net. If a predefined release event occurs (such as the vendor going out of business, discontinuing support, or failing to meet contractual obligations), the escrow agent releases the deposited materials to the end-user organization. This allows the organization to continue using and maintaining the software, protecting their investment and ensuring business continuity.