This paper provides quick reference on various aspects and checkpoints on Technical Support Outsourcing engagement for software product companies - also known as Enterprise Software Vendors (ESVs) or Independent Software Vendors (ISVs). This paper also outlines the successful outsourcing approach of Goldstone Technologies. No other industry is probably as fiercely competitive as ESVs. As a result, the success ratio of software product companies has been historically less than 5%. On the positive side, probably no other industry has witnessed as rapid globalization and rapid growth as ESVs.