In the rapidly advancing field of AI and ML, this paper explores their pivotal role in transforming cybersecurity. Highlighting the integration of sophisticated techniques like deep learning for intrusion detection and reinforcement learning for adaptive threat modeling, it emphasizes the shift towards AI-driven cybersecurity solutions. The study meticulously analyzes supervised and unsupervised learning's impact on threat detection accuracy and the dynamic capabilities of neural networks in real-time threat identification. It reveals how these methodologies enhance digital defenses against complex cyber threats, underscoring the theoretical underpinnings and practical applications of AI and ML in cybersecurity. The paper also discusses the challenges and future directions, contributing significant insights into the evolving landscape of cybersecurity technologies. This comprehensive research background sets the stage for understanding the unique contributions and potential of AI and ML in strengthening cybersecurity measures.