Flow PowerPoint charts templates graphical representation of the flow of data through a system (also an information system). In other words, the path goes from the source to the destination. It also shows whether the information actually reached the destination (whether or not it was discarded or stored, for example.
Sankey charts or flow charts in which the width is shown by arrows in proportion to the amount of flow. The name comes from the Irish captain Matthew Henry Phineas Riall Sankey, who in 1898 used this type of charts to show the energy efficiency of the steam engine. It is usually used to visualize energy, material or costs of transfers between processes.