What does it mean that the minimum viable output?

Deliver the simplest version that provides value then iterate if needed.

Example: Your team needs a competitive analysis. Instead of spending two weeks building a comprehensive forty-page report, you produce a one-page table comparing the top three competitors on the five dimensions that matter most to the decision at hand — and the team makes their strategic call that afternoon using your one-pager, never needing the other thirty-nine pages.

Try this: Pick one output you are currently procrastinating on or overbuilding. Write down the full version you have been imagining. Now strip it to its core: what is the absolute minimum deliverable that would provide value to its recipient? Define that minimum version in one sentence. Build it today, ship it, and note whether anyone asks for the parts you removed.