This video explains why businesses, especially small and medium enterprises (SMEs) and startups, need a Chief Financial Officer (CFO). It highlights that a CFO is crucial for startups aiming to achieve unicorn status by establishing credibility in control, risk management, liability mitigation, and compliance. The video also addresses the affordability concern for SMEs and startups, suggesting that outsourcing CFO services can provide the necessary expertise without the cost of a full-time hire.