How to onboard a COO: the 90-day framework

Executive overview

A new COO lands like a boulder in a pond — ripples go everywhere. Acting too early, without context, damages trust and creates backchannel tension that's hard to undo.

The fix is a structured 90-day onboarding: one month observing, one month stress-testing hypotheses, one month executing. The CEO must stay engaged throughout.

Moving slowly in the first 60 days is the prerequisite for moving fast later.

The three-phase onboarding model

• Month 1 — understand: no decisions; observe meetings, take notes, build a running list of ideas
• Month 2 — evaluate: revisit and stress-test notebook ideas; dig in with the team to check assumptions
• Month 3 — execute: act only after building a project map ranked by impact
• Coming out swinging makes everyone nervous; what looks obvious in week one looks different in week three
• Let something run at 70% efficiency rather than making it worse with a premature fix

Building trust before making changes

• People respect the COO title automatically; respect for the individual takes 30–60 days
• Early decisions made without full context create ripple effects and backchannel communication
• The COO should take people to lunch, conduct informal interviews, and ride shotgun across every business area
• Rank improvement areas by impact before acting; scattered effort undermines credibility
• Deposits precede withdrawals — the more you invest in individuals, the more forgiveness and trust you earn

What the CEO must do during onboarding

• The CEO cannot step back the day the COO arrives, even if that's the goal
• Stay relatively hands-off while the COO observes — little risk at this stage
• Share a detailed vivid vision (3–4 pages, three-year horizon) so the COO can prioritise correctly
• Without a shared vision, the COO cannot know what to execute toward
• The CEO–COO relationship requires the same coordination as co-parenting: uncoordinated actions guarantee conflict

Onboarding benchmarks to hit before handover

• One-on-one meetings with every VP and director
• Lunch or coffee with each of them
• Observation of every business-area meeting
• Review of the last 90-day project plan
• Full understanding of the vivid vision
• Conversations with suppliers and customers
• Completion of any internal training courses and books

The operating manual

• Rippling COO Matt McGinnis created a personal operating manual distributed to every employee
• It covers: how he operates, what drives him, what pisses him off, how he makes decisions
• Prevents ripple effects by removing ambiguity about how to work with the COO
• Any leader creating their own operating manual accelerates team alignment

Continuing development after onboarding

• COO coaching tends to come from CEO coaches who are former executives; no dedicated COO coach market exists
• Key coaching areas: marketing, technology, automation, offshoring, running hybrid meetings, receiving criticism
• The COO Alliance is a peer network exclusively for seconds-in-command; membership requires $5M+ revenue
• Members report that discovering universal imposter syndrome across peers significantly reduces their own
• COOs learn they don't need to know everything — only who can solve a given problem

The COO scorecard

• Capability 1 — vision alignment: in the best companies, the COO references the vivid vision constantly and the team, customers, and suppliers all understand it
• Capability 3 — recruiting systems: top COOs top-grade staff every six months, maintain a virtual bench, and have all managers certified in interviewing
• Capability 5 — financial systems: the COO needs full access to financials — restrictions and opportunities — to make strategic decisions on hiring and projects
• Capability 6 — COO skill set: the best COOs have a 6–12 month personal growth plan and belong to a mastermind group
• No one scores a 10 across all capabilities; the scorecard is a growth tool, not a pass/fail test