Complex sentence: Platform performance management involves monitoring the health and capability of a computing platform throughout its entire life cycle, assuring delivery of reliable, predictable and consistent quality of service from initial installation, through normal maintenance, upgrades and right to end of life.
Split into simpler sentences: Platform performance management involves monitoring the health and capability of a computing platform throughout its entire life cycle, assuring delivery of reliable, predictable and consistent quality of service. From initial installation through normal maintenance, upgrades and right to end of life.