A professional 3:4 UML sequence diagram for mapping an e-commerce checkout flow, professionally designed by Template.net, with four colored actor boxes, vertical lifelines and labeled message arrows in yellow, purple, green and sky blue.

A professional 3:4 UML sequence diagram for mapping an e-commerce checkout flow, professionally designed by Template.net, with four colored actor boxes, vertical lifelines and labeled message arrows in yellow, purple, green and sky blue.
Customize it in two ways:
By Template.net