This document specifies requirements for an event sustainability management system for any type of event or event-related activity, and provides guidance on conforming to those requirements. This document is applicable to any organization that wishes to: a)       establish, implement, maintain and improve an event sustainability management system; b)       ensure that it is in conformity with its stated sustainable development policy; c)        achieve the intended result(s) of its event sustainability management system; d)       demonstrate voluntary conformity with this document by: —    first party (self-determination and self-declaration); —    second party (confirmation of conformance by parties having an interest in the organization, such as clients, or by other persons on their behalf); —    an independent third party (e.g. a certification body).