Limited but accessible. The web version offers a "BPMN Diagram" template, but it is significantly stripped down. It lacks the deep validation rules and has fewer shape customization options.
For those looking to go beyond the basics, Visio also allows you to link your BPMN shapes to external data sources like Excel or SQL Server. This transforms a static diagram into a live dashboard. You can color-code shapes based on real-time performance metrics, such as cycle time or cost, allowing for data-driven process improvement. Visio Bpmn Template