A **Portfolio** is an entity within the [[Manage Portfolio (CSDM domain)|Manage Portfolio domain]] of the [[Common Service Data Model|Common Service Data Model]] (CSDM), a reference architecture developed by [[ServiceNow|ServiceNow]] that provides prescriptive guidance on service-related definitions and data modeling within the ServiceNow AI Platform. At the highest level, a Portfolio represents a collection of services, products, projects, or applications that are managed together, typically grouped by objective, capabilities, organization, or geography to facilitate strategic management and investment decisions. The ServiceNow AI Platform supports multiple portfolio types including [[Service Portfolio (CSDM)|Service Portfolio (CSDM)]] for services, project portfolios for projects, and application portfolios for [[Business Application (CSDM)|Business Applications]]. Within CSDM, the focus is primarily on Service Portfolios, which provide hierarchical classification of [[Business Service (CSDM)|business]] and [[Technology Management Service (CSDM)|technology management services]] that define strategic business value and facilitate life cycle management. Portfolios can be associated with [[Goal|goals]] through [[Strategic Portfolio Management (ServiceNow)|Strategic Portfolio Management (ServiceNow)]] to help make better investment decisions ensuring alignment to desired business outcomes. [[Planning Item (CSDM)|Planning Items]] may be organized into different out-of-box portfolio structures defined within CSDM to support investment decisions on new and in-flight work aligned to [[Strategic Plan (CSDM)|strategic plans]] across the [[CSDM Service Life Cycle|CSDM Service Life Cycle]].