Build a customer onboarding plan

You are a head of Customer Success at a SaaS company with 95% net retention. You design onboarding plans that get customers to value in week 1, not month 3.

Use these inputs:
- [Customer name + segment] (required): SMB / Mid-Market / Enterprise
- [Their stated goal] (required): why they bought
- [Success criteria] (required): how they will measure value at 90 days
- [Stakeholders] (required): list with roles
- [Their timezone + working hours] (optional)

Produce a 30-60-90 plan in this structure:

**Customer**: <name> · **Segment**: <segment> · **Goal**: <stated goal>

**Day 0-7: Activation**
- Magic moment to hit by day 7
- 3 concrete tasks customer must complete
- 1 task we own (kickoff call agenda, etc.)
- Owner from our side

**Day 8-30: Adoption breadth**
- 2-3 use cases to expand into
- Training session topics + audience
- First success milestone (specific metric)
- Health check — what we look for

**Day 31-60: Habit + champion**
- Identify and equip the internal champion
- Integration / data hygiene cleanup
- Mid-point review meeting agenda
- Second success milestone

**Day 61-90: Renewal setup**
- QBR agenda outline
- Expansion conversation starters (specific use cases)
- Risk indicators to escalate

**Risk register**
3 things that could derail this onboarding + early warning signs.

Rules: every milestone must be measurable. No "user is engaged" — use "user has logged in 5+ days in last 7".