Customer Success: Definition, Roles, and Metrics
Customer success is the proactive work of helping customers achieve their goals with a product or service. It combines onboarding, education, ongoing engagement, and attention to obstacles that could interrupt progress, as described in Salesforce’s customer success guide.
The Customer Success Association’s definition emphasizes lasting, demonstrable value for both the customer and the provider. Customer success therefore concerns what customers gain from a purchase and whether the company can sustain the relationship. It brings together knowledge of the customer, the product, and the work the product supports.
Why customer success matters
Customer success connects the reason for a purchase with the value received over time. The Customer Success Association’s mission statement calls for customers to acknowledge the benefit they have received and agree on the next measurable objective. This gives the relationship a continuing focus: the customer’s goals, evidence of progress, and the value of continuing the relationship for both parties.
For the provider, the main areas of responsibility are adoption, retention, and expansion. In TSIA’s customer success framework, adoption concerns product use and realized value; retention concerns continued value that supports renewal; and expansion concerns value that supports additional purchases. These are areas of responsibility, and an organization can combine them in its customer success charter.
Customer success vs. support and account management
These functions work with existing customers but address different needs. Salesforce distinguishes proactive customer success from support that responds to inquiries and resolves specific problems. HubSpot distinguishes customer success from account management by separating adoption and customer outcomes from management of the commercial relationship.
| Function | Main responsibility |
|---|---|
| Customer success | Help customers achieve intended outcomes through adoption, enablement, and ongoing guidance. |
| Customer support | Troubleshoot problems and answer requests when assistance is needed. |
| Onboarding | Provide the initial guidance, tutorials, and training needed to begin using the product or service. |
| Account management | Handle the renewals, pricing, contracts, and growth opportunities associated with an existing account. |
The boundaries depend on the organization. HubSpot notes that smaller organizations may combine success and account management responsibilities in one role. The distinction describes the work even when one person carries out several functions.
What does a customer success manager do?
A customer success manager, or CSM, maintains the working relationship between customers and the provider. The Customer Success Association’s CSM competency standard identifies responsibilities that include:
- Agreeing on customer goals, timing, and measures of progress.
- Creating and maintaining a customer success plan.
- Building relationships with the people who influence and use the purchase.
- Reviewing customer value and discussing positive and negative results.
- Recording interactions, analyzing customer data, and recommending action.
- Communicating customer needs and changes to the appropriate internal departments.
- Managing renewal and growth opportunities according to company policy, including handoffs when required.
The role combines communication skills, product knowledge, and understanding of the customer’s work. TSIA’s guidance on CSM skills connects these capabilities to effective adoption and customer outcomes. Technical knowledge here means understanding the product from a user’s perspective and knowing how it supports the intended use.
How customer success works through the lifecycle
Onboarding
Onboarding establishes the initial guidance and education needed to use the purchase. Salesforce describes proactive onboarding as part of a strategy that also includes goal setting and continuing engagement. Setup, tutorials, and training belong to this early stage, while the agreed customer goals provide direction for what comes next.
Adoption
Adoption concerns how customers use the product or service and obtain value from it. TSIA’s adoption charter explicitly includes both use and business value.
Ongoing value reviews
Value reviews compare progress with the goals recorded in the success plan. The Customer Success Association’s KPI guidance emphasizes both progress toward agreed goals and the customer’s acknowledgement of that progress. These reviews bring the customer’s assessment into the record alongside product and account data.
Renewal and expansion
Renewal continues the existing commercial relationship, while expansion increases its scope. HubSpot’s account management guidance places contract and pricing discussions with the commercial function and describes collaboration with customer success throughout the relationship. Customer success contributes knowledge of customer goals, adoption, feedback, and ongoing value to these decisions.
How to measure customer success
Customer success measurement covers customer progress, the health of the relationship, and commercial results. The Customer Success Association’s measurement guidance identifies customer plans and proven value as central, while recognizing uses for satisfaction, retention, advocacy, and activity measures.
| Measure | What it shows |
|---|---|
| Customer goal progress | Progress toward the goals agreed in the customer success plan, confirmed with the customer. |
| Adoption | Whether customers are using the product or service and realizing value. |
| Customer health score | A combined view of usage, support history, feedback, and engagement used to assess renewal, growth, or churn risk. |
| Customer churn | Customers who leave the existing customer base during a defined period. |
| CSAT and NPS | Customer satisfaction and willingness to recommend, respectively. |
| Gross revenue retention, or GRR | The proportion of existing recurring revenue retained after cancellations and downgrades, excluding expansion revenue. |
| Net revenue retention, or NRR | Retained revenue from existing customers after losses, including upsells, cross-sells, and expansion. |
GRR and NRR apply to recurring revenue relationships. As Stripe explains in its comparison of revenue retention measures, expansion can offset losses in NRR, while GRR isolates retention without that additional revenue. Both measures concern existing customers over a stated period; new customer revenue is excluded.
A health score helps prioritize attention. Gainsight’s health score guidance recommends adapting inputs to customer segments and lifecycle stages, and testing the model against historical renewal or churn data. The score’s inputs explain which signals changed and provide a starting point for investigation. Gainsight also recommends direct customer conversations to understand the causes of a low score and then choose an appropriate response.
How to organize a customer success program
A practical program needs clear responsibilities, customer goals, an engagement model, and a way to act on information. The following elements turn those requirements into repeatable work:
- Define the charter. Specify whether customer success owns adoption, retention, expansion, or a combination, using TSIA’s charter categories to name the responsibilities.
- Document the success plan. Record agreed goals, timing, and measures, following the association’s competency standard. Maintain the plan as expectations change.
- Choose the engagement model. The same CSM standard describes high, medium, and low touch approaches, including self-directed success. Select an approach alongside customer segmentation and the value of the relationship.
- Coordinate across functions. The association’s definition of customer success management integrates sales, services, training, and support activities. Keep the customer’s intended outcome visible in the information passed between those functions.
- Connect risk signals to action. Use alerts, assigned follow-ups, and repeatable responses for changing account conditions, as described in Gainsight’s guidance on health scores and playbooks.
- Review value with the customer. Confirm progress and agree on the next measurable objective, following the Customer Success Association’s mission guidance. Continue this work throughout the relationship.