How One CTO Uses a Decision Log to Make Every Call Auditable

Tech Leadership with Fexingo: Engineering Managers, CTOs, and Technical Leadership Conversations · Jun 22, 2026 · 8m · transcript

Lucas and Luna explore a surprisingly low-tech tool used by high-performing CTOs: the decision log. They examine how a CTO at a mid-size SaaS company started documenting every architectural and strategy decision in a shared, timestamped document — including the context, alternatives considered, and the expected outcome. The hosts discuss why this practice prevents 'decision amnesia,' reduces re-litigation of closed topics, and creates a goldmine for post-mortems. They walk through a concrete example from a real engineering team and contrast it with the common habit of relying on Slack…