JT (Jupiter Tessellation) is an ISO standard (ISO 14306:2017) file format for lightweight 3D data visualization and product lifecycle management (PLM). It's designed to efficiently store and exchange 3D models, assemblies, and related product information. JT files can contain precise boundary representation (B-rep) data, tessellated data (faceted representations), product structure, metadata, and visualization information. This makes it suitable for various applications, including CAD/CAM/CAE, digital mock-up, virtual prototyping, and collaboration. The format supports progressive loading, allowing users to quickly view a simplified version of a model before the entire file is loaded. JT files are often used to share 3D data between different CAD systems and to visualize large assemblies without requiring the full CAD software. The format is widely adopted in the automotive, aerospace, and manufacturing industries for its ability to handle complex models and its support for various levels of detail (LOD). JT files can also contain PMI (Product and Manufacturing Information), such as dimensions, tolerances, and annotations, which are crucial for downstream processes like manufacturing and inspection. The format's open nature and widespread support make it a valuable tool for interoperability in the product development process.