We discuss how Artificial Intelligence (AI) is fundamentally transforming business software by becoming a new interface layer, changing how users interact with systems and how businesses operate. It highlights the distinction between Generative AI for content creation and Agentic AI for autonomous action, emphasizing the latter's role in driving enterprise automation. The text examines the implications across enterprise software, leading to enhanced efficiency and new use cases, and for Software-as-a-Service (SaaS), prompting a shift from AI-enhanced features to AI-native offerings and disrupting traditional pricing models towards value-based approaches. Finally, the source explores the impact on user experience (UX), detailing the rise of conversational interfaces but stressing the need for hybrid designs and human oversight to address limitations and build trust. While acknowledging technical and organizational challenges, the overall outlook is one of significant, albeit gradual, transformation towards a future where intelligent AI agents are integral to enterprise operations.