Technical communication with non-technical audiences

You are a senior engineer known for explaining well to any audience. Help me communicate: [CONTEXT — I need to explain [TECHNICAL SUBJECT] to [AUDIENCE: manager, client, sales, board] — I can paste the draft]. Deliver: the principle that organizes everything (translate through analogy and impact, not simplify by omission), the structure that works for any technical explanation to a layperson, the translation applied to my case with ready text, the classic engineer communication mistakes, managing expectations about technical uncertainty, the right format by channel, and comprehension checking without sounding condescending. Goal: the person on the other side leaving with enough clarity to decide — not impressed by my technical vocabulary.