Microsoft Excel Binary Spreadsheet (.xlsb)
The XLSB file extension stands for "Microsoft Excel Binary Spreadsheet". This format is designed to store spreadsheet data in a binary format, significantly reducing file size and enhancing performance when handling large datasets compared to the more common XLSX format. The XLSB format was introduced with Excel 2007, offering faster file opening and saving times as well as reduced memory usage, making it ideal for complex spreadsheets with extensive calculations, data analysis, and large amounts of information. This efficient, performance-driven format is favored in professional IT environments where speed and efficiency are paramount.