This guide presents an overview of AI voice agents, focusing on their practical applications and implementation frameworks. It defines AI voice agents as systems capable of engaging in real-time conversations, integrating with various business systems, and completing tasks autonomously. The document compares AI voice agents to traditional systems, highlighting their advantages in handling open-ended conversations and performing real tasks without human intervention. It outlines several use cases where AI voice agents excel, including customer support triage, appointment management, payment reminders, and lead qualification. The guide also discusses an evaluation framework for assessing the effectiveness of AI voice agents, considering factors such as conversation predictability, actionability, and time to value. Additionally, it addresses common mistakes to avoid when implementing AI voice agents, emphasizing the importance of system integration and a focused scope. The document concludes by suggesting how to choose the first use case for deploying AI voice agents effectively.