An  Asset Portfolio is a Management System aimed at developing and maintaining in operational conditions a set of Mezzo Resource Operating Assets, delivering Resource Capabilitys required by Business Operations.

The purpose of  Asset Portfolios is efficiency: Managed Resource Assets must provide expected Resource Capabilitys in the best cost / performance ratio.

An  Asset Portfolio Stage is a past, current or future state of an Asset Portfolio.

Each Asset Portfolio represents an initiative comprising a purposeful set of activities whose primary purpose is focused on achieving a set of clearly defined objectives assigned to assets managed in the Asset Portfolio.

It may transcend organisational boundaries and consequently require integrated team working under the direction of a Management Team.