Large Language Models (LLMs) are advanced artificial intelligence systems designed to understand and generate natural language text, trained on extensive datasets of text from the internet. They can learn language patterns, grammar, and a wide range of information, generating coherent and contextually relevant text based on input received. However, LLMs often struggle with contextual understanding, misinterpreting prompts or missing crucial information due to their vast training data lacking domain-specific expertise. Fine-tuning overcomes these limitations by specializing LLMs for specific tasks through targeted data and training, unlocking their true potential for accurate and reliable applications. Various fine-tuning techniques exist, including full model fine-tuning, feature-based fine-tuning, parameter-efficient fine-tuning, and RLHF (Reinforcement Learning from Human Feedback) fine-tuning. These techniques cater to specific scenarios and offer unique advantages, making LLMs shine in real-world applications.