Microsoft Visio Professional 2019 is the advanced edition of Microsoft's diagramming software, sold here as a retail FPP pack with physical installation DVD for a single PC -- a one-time purchase perpetual licence, not a subscription. It covers everything Visio Standard offers for flowcharts, organisation charts and floor plans, then adds the tools needed for genuinely technical or data-driven diagramming: data-linked diagrams that pull live information from Excel, SQL Server or other data sources directly into shapes, advanced templates for network diagrams, IT infrastructure and database schemas, and integration with Visio Online for sharing and co-authoring diagrams with a team via OneDrive. This makes it the edition IT professionals, network engineers, business analysts and process consultants typically need, rather than the general office-diagramming edition. It works alongside the rest of Microsoft Office for embedding diagrams into documents and presentations. Requires Windows 10 or newer (32-bit or 64-bit) -- desktop software installed and activated on the one PC it's licensed to, not a roaming cloud subscription. The right choice for anyone documenting network topology, IT systems, database structures, or any diagram that needs to reflect live underlying data rather than a static drawing. Box contents: installation DVD, product key card, licence documentation.