Outsourcing data cleansing services provides businesses several key benefits: it allows businesses to access experienced data professionals at a lower cost than hiring in-house, helps ensure data is complete, accurate and up-to-date which boosts efficiency and productivity, and enables businesses to target customers more effectively by cleaning outdated data. Outsourcing also lowers costs by eliminating the need to hire an in-house team, buy software/tools, or build infrastructure, and provides flexibility to scale with market changes. The document recommends outsourcing data cleansing services to optimize databases, make business processes more efficient, and improve marketing returns on investment.