A finance lead, a product owner and an implementation engineer may need different explanations of the same problem. Ask yourself what decision each person faces.
Google's technical-writing guidance recommends matching explanations to the audience's knowledge and task. Job title alone is insufficient; familiarity with a particular system matters too.
Source: Google Technical Writing, AudienceBefore a difficult explanation, ask:
“Would it help to start with the effect on today's workflow, then go through the technical cause?”
If the client already understands the technical context, use it. Calling someone non-technical should never become a reason to talk down to them.