The IMO Compendium is a tool for software developers that design the systems needed to support transmission, receipt, and response via electronic data exchange of information required for the arrival, stay, and departure of the ship, persons, and cargo to a port. By harmonizing the data elements required during a port call and by standardizing electronic messages, the IMO Compendium facilitates the exchange of information ship to shore and the interoperability of single windows, reducing the administrative burden for ships linked to formalities in ports. The IMO Compendium consists of an IMO Data Set and IMO Reference Data Model agreed by the main organizations involved in the development of standards for the electronic exchange of information related to the FAL Convention. Since July 2019, the IMO Expert Group on Data Harmonization (EGDH) is responsible for the technical maintenance of the IMO Compendium and for further expanding its data set and data model to areas beyond the FAL Convention, including exchange of logistics and operational port and shipping data. The first meeting of this expert group took place from 4 to 8 November 2019 at IMO. Access the HTML version of the IMO Compendium