What customer service is
Customer service is the whole experience of helping customers succeed — answering pre-sale questions, guiding onboarding, sharing best practices, and nurturing the relationship over time. It spans the entire journey and is often proactive, reaching out before a customer hits a wall.
What customer support is
Customer support is the problem-solving subset: a customer has a specific issue — a bug, an error, a how-do-I question — and support resolves it. It's more technical and more reactive, measured by things like resolution time and first-contact resolution. Support is one important part of customer service, not a separate discipline.
Why the distinction is fuzzy
The terms overlap heavily and are used interchangeably in everyday language. The useful difference is scope: "support" leans technical and issue-driven, "service" leans relational and journey-wide. In a small SaaS team, the same people handle both — they answer the bug report (support) and check in proactively (service) from the same inbox.
Which should you use?
Don't overthink it. Customer support (resolving issues) is a part of customer service (the whole relationship). For a small team it's a distinction of emphasis, not org charts — the same people resolve tickets and build the relationship from one place. Pick tooling that handles both rather than splitting them.

