Also called: AM
An account manager (AM) owns the relationship with an existing customer after the deal closes, typically responsible for renewal and expansion revenue within accounts already won, distinct from an AE who owns net-new deals.
Where an AE's job ends at signature, an account manager's job starts there. The seat owns the account after close: keeping the relationship healthy, running renewal conversations before a contract lapses, and finding legitimate expansion, a new team adopting the product, an upsell to a higher tier, inside an account that's already a customer. It's a different sales motion than net-new: the trust is already there, the ask is usually smaller, and the risk is usually churn rather than losing to a competitor.
Where this gets confusing is the overlap with customer success manager. Some companies run one combined role. Others split it: an AM who owns the commercial number, renewal and expansion revenue, and a CSM who owns product adoption and account health, feeding the AM a warmer or cooler read on whether a renewal conversation will be easy or hard. Neither split is standard across the industry. A given company's org chart, not some fixed job description, decides which model it runs.
Before comparing an AM role across two companies, check whether the seat also covers what a CSM would own elsewhere, adoption tracking, health scoring, onboarding, or whether those live in a separate role reporting the account's health back to the AM.
People assume account manager and customer success manager are the same job with a different label. Sometimes they are. Often they're not, and the difference is usually about who owns the number: an AM is typically measured on renewal and expansion revenue directly, while a CSM is more often measured on adoption and health metrics that feed into that number rather than owning it outright.
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