Next-generation sequencing (NGS) is a modern method used to determine the sequence of DNA or RNA in a sample. Unlike traditional sequencing techniques, NGS can analyze millions of fragments simultaneously, making it faster and more cost-effective. This technology is widely used in various fields, including genomics, personalized medicine, and cancer research. NGS allows scientists to identify genetic variations and mutations that may contribute to diseases. By providing a comprehensive view of an organism's genetic makeup, NGS plays a crucial role in advancing our understanding of genetics and improving diagnostic tools, ultimately leading to better treatment options for patients.