OKRs (Objectives & Key Results) are a goal-setting framework where you set an ambitious Objective (what you want to achieve) and 3-5 Key Results (how you'll measure success). Think "Objective: Become the go-to tool for designers" with Key Results like "5,000 designers sign up" and "50% weekly retention." Made famous by Google, now used by startups to align teams.
Use OKRs when you have multiple team members and need alignment on what matters, when you're past the chaotic MVP stage and want focus, or when you need to track progress toward ambitious goals. Set them quarterly for agility. Don't use OKRs if you're pre-PMF and changing direction weekly—they work best with some stability.
Product Management
Objectives and Key Results for alignment