As applications grow increasingly interconnected and intricate, the function of Artificial Intelligence (AI) in their security is becoming more significant. AI-based security solutions are improving threat detection, vulnerability management, and real-time response strategies. This article examines the influence of AI on application security, emphasizing its role in anomaly detection, automated threat response, secure software development, and compliance adherence. The rise of AI-enhanced security tools is proving to be a revolutionary method for safeguarding applications against the evolving landscape of cyber threats while ensuring strong security protocols.