Since the late nineties, enterprise resource planning (ERP) vendors have developed functionality for vertical markets in the service industry. Simultaneously, professional services automation (PSA) became a viable software category. Consequently, deciphering the difference between ERP and PSA remains a challenge.
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manufacturing industry had tapered off, tier one ERP vendors, such as SAP and Oracle , had refocused efforts to market their integrated solutions in the greener pastures of service-oriented vertical markets, such as the health care sector, the public sector, and service based businesses. Simultaneously, professional services automation (PSA) solutions appeared, and best-of-breed vendors such as Changepoint (today Compuware ) and Evolve (now part of Primavera ''s PSA offering) were developing project- and