Introduction Artificial Intelligence (AI) Agents are intelligent software systems capable of perceiving their environment, reasoning about tasks, making decisions, and performing actions autonomously. Modern AI agents combine large language models, memory, planning, and external tools to solve complex real-world problems. They are transforming healthcare, finance, education, cybersecurity, software engineering, manufacturing, and customer support by improving productivity and reducing manual effort. Architecture User -> AI Agent (LLM) -> Memory/Planning/Decision -> External Tools/APIs -> Response Working The user submits a request. The AI agent interprets the request, retrieves relevant knowledge, plans the required steps, chooses suitable actions, invokes external tools or databases when necessary, verifies the results, and returns an accurate response. Continuous learning and feedback help improve future performance. Applications AI agents are used in virtual assistants, ...