PDF/E is a specialized version of the PDF format designed for engineering documents. It ensures that files maintain their integrity and can be easily shared and viewed across different platforms without losing quality or functionality. This format supports features like 3D models, layers, and annotations, making it ideal for technical drawings and schematics. The PDF/E standard is governed by the International Organization for Standardization (ISO) and is part of the broader PDF family. It aims to facilitate collaboration among engineers and designers by providing a reliable way to exchange complex documents while preserving their original appearance and interactive elements.