The Trans Tasman Interlending project facilitates interlibrary loans between New Zealand and Australian libraries, allowing them to request and supply resources across the Tasman since its launch on March 1, 2006. The project aims to enhance resource sharing through a centralized invoicing system and has evolved from previous initiatives dating back to 1998-1999. Future considerations include addressing copyright issues, extending services to other countries, and improving invoicing and document delivery functionalities.