We're an enterprise software company, so the diagram should be business-y, but it doesn't need to be too serious. However, something that's cartoony and silly would not be appropriate.
Don't want a very simple iconic illustration that's too high-concept, but we need to steer clear of illustrations that are too detail heavy or visually complex.
We want the illustration to be light and bright, not dark and foreboding.
We'd like to have our corporate logo (bidirectional arrow circle) incorporated in some way, but not so large that it overwhelms the illustration.
Would like for the illustration to have a fairly limited color palette.
The business partners whom that data is passed to should not be portrayed as criminal or evil. We're not a fraud prevention platform -- just more of a data protection platform.
There could be a protection element in the graphic -- something that conveys that Mezzobit keeps its customers' data safe.
What WE'RE NOT looking for is creating a mascot or character to represent the product -- but it's fine to have character(s) embedded in the illustration.