Glossary

Customer Experience Glossary

Definitions and context for the terms that matter most in modern customer service.

AI Customer Service Agent

Software that autonomously handles customer inquiries without requiring a human agent.

Agent Utilization Rate

The percentage of time agents spend on productive work versus idle or unscheduled time.

Average Handle Time (AHT)

The average total time a support agent spends on a customer interaction, including talk time, hold time, and after-call work; a key contact center efficiency metric.

CSAT (Customer Satisfaction Score)

A metric that measures how satisfied customers are with a specific interaction, typically collected via a post-contact survey asking customers to rate their experience.

Call Abandonment Rate

The percentage of inbound callers who disconnect before reaching a live agent. A high abandonment rate signals staffing gaps, scheduling mismatches, or IVR routing problems. Best-in-class contact centers maintain abandonment rates below 3%.

Contact Center Automation

The full range of technologies used to handle customer interactions and agent workflows with reduced human effort, from IVR call routing to agentic AI that resolves complex issues end-to-end.

Conversational AI

Technology that enables computers to simulate natural, human-like dialogue — powering the chatbots, voice assistants, and AI agents that handle customer contacts end-to-end at scale.

Cost Per Contact

The total cost of running customer support divided by the number of contacts handled — the primary financial efficiency metric for contact centers.

Customer Churn Rate

The percentage of customers who stop doing business with a company over a defined period; the most direct measure of retention failure and a leading indicator of revenue erosion.

Customer Effort Score (CES)

A metric that measures how much effort a customer had to exert to get their issue resolved — a stronger predictor of loyalty than satisfaction alone.

Customer Journey Mapping

A visual or structured representation of the steps a customer takes when interacting with a company — used to identify friction, gaps, and opportunities across the full experience.

Customer Lifetime Value (CLV)

The total net revenue a business expects to generate from a customer over the entire duration of the relationship. This metric reframes support from a cost center to a revenue protection function.

Escalation Rate

Escalation rate is the percentage of customer service interactions that cannot be resolved at the initial point of contact and must be transferred to a higher-tier resource.

First Contact Resolution (FCR)

The percentage of customer issues fully resolved on the first interaction — a dual indicator of support quality and cost efficiency, since every repeat contact is both a cost and a loyalty risk.

First Response Time (FRT)

The time between a customer submitting a support request and receiving the first substantive reply from a human agent or AI — one of the most closely watched speed metrics in customer service.

Helpdesk vs. CRM: What's the Difference?

A helpdesk manages support tickets; a CRM manages customer relationships. The distinction matters less than most teams think — and the cost of keeping them separate is higher than most realize.

Human-in-the-Loop (HITL)

An AI design principle in which human judgment is incorporated into an automated workflow — ensuring people remain in control of decisions that exceed the AI's competence or authority.

Net Promoter Score (NPS)

A customer loyalty metric based on a single question around likelihood to recommend, which segments customers into Promoters, Passives, and Detractors and produces a score from -100 to +100.

Omnichannel Customer Service

A support approach in which all communication channels — email, chat, phone, social, messaging — share a unified customer record so context follows the customer across every interaction.

Proactive Customer Service

Proactive customer service inverts the traditional reactive model by reaching customers with alerts, updates, or assistance before they contact the support team.

Repeat Contact Rate

The percentage of customers who reach out more than once about the same unresolved issue within a defined window.

Sentiment Analysis

A process in which natural language processing is used to detect the emotional tone of customer interactions at scale, providing a continuous signal of how customers feel without relying on post-interaction surveys.

Service Level Agreement (SLA)

A formal commitment that defines expected response and resolution times for support interactions — the operational baseline against which agents, teams, and workflows are measured.

Ticket Deflection

The percentage of potential support contacts resolved through self-service before reaching a live agent — a leading indicator of self-service maturity and cost efficiency.

Voice of the Customer

Voice of the Customer (VoC) is the systematic practice of capturing and acting on customer feedback across multiple listening channels.

Workforce Management (WFM)

The processes and tools used to forecast contact volume, schedule agents, and monitor real-time adherence; the operational backbone that makes SLA performance possible at scale.

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