The B2B SaaS market is becoming increasingly competitive, pushing companies to adopt agentic AI to tackle challenges like high churn and thin margins, which makes scaling and profitability much harder. AI agents can deliver real business impact by enabling end-to-end customer support automation, reducing operational costs, and creating more personalized customer experiences that improve retention. This article explores the key benefits, five essential use cases, practical implementation tips, and a brief look at the future of AI agents in SaaS.