Microsoft Visio Pro for Office 365 (Plan A2) - subscription license - 1 user

Visio Professional provides diagramming solutions that help business and technical professionals document and communicate a broad range of ideas, information, and systems. Diagrams created in Visio Professional provide valuable insights into existing technical systems and help individuals and teams more effectively develop new ones. When used to augment text and numbers, Visio diagrams make a message more concise, help people remember main points, and transcend cultural and technical barriers.

Take advantage of specialized diagram types to create network, Web site, database, and software diagrams. Intelligent, precise diagrams and drawings incorporate detailed data and reflect accurate dimensions. Improved reporting capabilities enable flexible data export, and the XML file format facilitates customization and interoperability. Visio Professional provides a familiar Microsoft Office environment and many Office features that help you become productive quickly.