The most common types of files shared via Dropbox include: Document Files: This includes Word documents (.doc, .docx), PDFs, text files (.txt), and other common document formats. These files often contain reports, proposals, contracts and other business-related documentation. Spreadsheet and Data Files: Excel files (.xls, .xlsx) and CSV files are commonly used for sharing financial data, analytics reports, customer databases, inventory lists and other data-driven documents. Presentation Files: PowerPoint presentations (.ppt, .pptx) and similar formats are used for sharing business presentations, marketing materials, training modules and more. Image Files: JPEG, PNG and other image formats are widely used, especially in creative fields like marketing, design and advertising for sharing graphics, design mockups, product images and other visual content. Video and Audio Files: These include formats like MP4, AVI for video and MP3, WAV for audio. Businesses use these for promotional content, training videos, webinars, podcasts and more. Project Management Files: This might include specific file formats related to project management software, such as Microsoft Project files (.mpp) or other project tracking documents. Software and Code Files: In tech industries, sharing of source code files, executable files or software packages is common. These might include formats like .java, .py, .exe or even compressed files like .zip or .rar. Legal and Compliance Documents: These are often shared in a secured manner and might include sensitive information related to legal cases, compliance documents, policy documents, etc. Design and CAD Files: For engineering or architectural firms, sharing CAD drawings (.dwg, .dxf) and design files from software like Adobe Photoshop (.psd) or Illustrator (.ai) is common. Research and Educational Material: Academic and research institutions might share research papers, datasets, educational resources, etc.   The diversity of file types reflects the versatility of Dropbox as a tool for business collaboration across various sectors, emphasizing its capability to handle a range of data-intensive and sensitive documents.