Synthetic data, which mimics real-world data without existing in reality, plays a crucial role in machine learning by addressing the scarcity and privacy concerns associated with real data in various domains. Generated through statistical methods and advanced deep generative models like GANs and LLMs, synthetic data finds applications in tabular, text, image, and video forms, offering a middle ground for data sharing without breaching privacy. Despite its advantages, challenges such as technical complexity, biases, and the trade-off between privacy and accuracy persist, necessitating innovative solutions like Differential Privacy and context-aware generation techniques. The use of synthetic data is gaining traction in industries and research, with AI leaders advocating for its potential to bolster AI advancements, including the development of AGI. As synthetic data generation continues to evolve, it becomes increasingly integral to enhancing AI capabilities while maintaining ethical standards and data integrity.