dfd - SERP Analysis

https://www.lucidchart.com/pages/data-flow-diagram

https://en.wikipedia.org/wiki/Data-flow_diagram

https://www.ibm.com/think/topics/data-flow-diagram

https://sbscyber.com/blog/data-flow-diagrams-101

https://www.geeksforgeeks.org/what-is-dfddata-flow-diagram/

https://www.visual-paradigm.com/guide/data-flow-diagram/what-is-data-flow-diagram/

https://www.canva.com/online-whiteboard/data-flow-diagrams/

https://www.techtarget.com/searchdatamanagement/definition/data-flow-diagram-DFD

https://blog.hubspot.com/marketing/data-flow-diagram

https://online.visual-paradigm.com/diagrams/features/dfd-maker/

https://www.gliffy.com/blog/what-is-a-data-flow-diagram