# Customer Segment A **customer segment** is a grouping of customers who share characteristics that warrant differentiated motions. Common segmentation axes: - **Size** — SMB, mid-market, enterprise - **Plan tier** — Starter, Professional, Enterprise - **Industry / vertical** — SaaS, agency, education, healthcare - **Use case** — onboarding-heavy, support-heavy, billable services - **Region** — NAM, EMEA, APAC - **Maturity** — first-year customer vs 5-year tenured ## Why segmentation matters A 1,000-employee bank doesn't want the same CS motion as a 5-person startup. Segmentation lets you build a 1:few playbook for SMB (digital, scalable) and a 1:1 playbook for enterprise (high-touch) without burning your CS budget. ## Common pitfalls - Too many segments (8+) → playbooks become unmanageable - Segments based on intuition not data - Segment doesn't update as customers grow - Tooling can't filter or report by segment ## How BlueHill helps BlueHill tags every customer record with segment fields (industry, plan, ARR band, lifecycle stage). All dashboards and reports filter by segment. Related: [Cohort](/glossary/cohort) · [Lifecycle](/glossary/lifecycle)