“No leader can do it alone. Leadership is not a solo act. In the story of every successful organization, institution, or community, you will not find a single example of exceptional achievement without the active involvement and support of many people.”
-- Jaime Augusto de Zobel de Ayala, Chairman and CEO of Ayala Corporation.
CPA stands for Cost / or Commissions per Action and is essentially an umbrella type for a number of other models such as CPI and CPS.