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Glossary

Growth, SaaS &
AI-Native GTM Glossary

Plain-English definitions of the metrics, frameworks, and emerging roles that actually matter for developer-first growth — from ARR and PLG to GTM engineer, AI-native GTM, and human-in-the-loop.

By Daria Dovzhikova · Updated June 2026

24 terms

Annual Recurring Revenue (ARR)

Metrics

The total amount of recurring revenue that a SaaS business expects to receive annually from its current customer base, calculated by multiplying Monthly Recurring Revenue (MRR) by 12.

Related:MRRRevenueSubscription

Customer Acquisition Cost (CAC)

Metrics

The total cost of acquiring a new customer, including all sales and marketing expenses divided by the number of customers acquired in a given period.

Related:LTVUnit EconomicsMarketing

Customer Lifetime Value (LTV)

Metrics

The predicted net profit attributed to the entire future relationship with a customer, typically calculated as average revenue per user times gross margin divided by churn rate.

Related:CACChurnRevenue

Monthly Recurring Revenue (MRR)

Metrics

The amount of recurring revenue that a business can expect to receive every month from its current subscribers or customers.

Related:ARRRevenueGrowth Rate

Churn Rate

Metrics

The percentage of customers who stop using a service during a given time period, calculated as (customers lost / total customers at start) × 100.

Related:RetentionLTVMRR

Product-Market Fit (PMF)

Strategy

The degree to which a product satisfies strong market demand, often measured through customer retention, growth rate, and user satisfaction metrics.

Related:Market ResearchProduct DevelopmentCustomer Validation

Conversion Rate Optimization (CRO)

Optimization

The systematic process of increasing the percentage of website visitors who complete a desired action, such as signing up for a trial or making a purchase.

Related:A/B TestingLanding PagesFunnel

Product-Led Growth (PLG)

Strategy

A go-to-market strategy where the product itself is the primary driver of customer acquisition, conversion, and expansion.

Related:FreemiumSelf-ServeProduct-Market Fit

North Star Metric

Strategy

A single metric that best captures the core value your product delivers to customers and drives sustainable business growth.

Related:KPIsOKRsGrowth Metrics

Expansion Revenue

Revenue

Additional revenue generated from existing customers through upselling, cross-selling, or increasing usage of the product.

Related:UpsellingCustomer SuccessNet Revenue Retention

Activation Rate

Metrics

The percentage of new users who complete key actions that indicate they've experienced the core value of your product during their initial usage period.

Related:OnboardingTime to ValueUser Journey

A/B Testing

Optimization

A controlled experiment methodology where two versions of a webpage, app, or feature are compared to determine which performs better for a specific goal.

Related:ExperimentationStatistical SignificanceConversion Rate

Cohort Analysis

Analytics

A behavioral analytics technique that groups users based on shared characteristics or experiences within a defined time period to track their behavior over time.

Related:User RetentionLifetime ValueBehavioral Analytics

Freemium Model

Strategy

A pricing strategy where basic product features are provided free of charge, while advanced features require a paid subscription.

Related:Product-Led GrowthConversion FunnelMonetization

Net Promoter Score (NPS)

Metrics

A customer satisfaction metric that measures the likelihood of customers to recommend your product to others, scored from -100 to +100.

Related:Customer SatisfactionCustomer LoyaltyProduct-Market Fit

AI-Native GTM

AI-Native GTM

A go-to-market approach designed around AI agents from the start rather than bolted on. Research, outbound, content, and analysis run as supervised agent workflows, so one operator delivers the output of a full team. Distinct from 'AI-powered,' which adds AI to a fundamentally human-first process.

Related:Agentic WorkflowAI WorkforceHuman-in-the-Loop

Human-in-the-Loop (HITL)

AI-Native GTM

A workflow design where AI agents do the volume work and a human reviews, corrects, and approves the high-stakes steps. In AI-native GTM it is the safeguard that keeps agent-run outbound and content on-brand and factually accurate — the speed of automation with the judgment of an operator.

Related:AI-Native GTMAgentic WorkflowAI Workforce

Agentic Workflow

AI-Native GTM

A multi-step process executed by AI agents that can plan, call tools, and chain actions toward a goal with minimal prompting — for example: research a prospect, draft a personalized email, then log it to the CRM. Agentic workflows are the building block of an AI-native growth team.

Related:AI WorkforceAI-Native GTMHuman-in-the-Loop

AI Workforce (Agent Fleet)

AI-Native GTM

A coordinated set of specialized AI agents — each scoped to a task such as research, copywriting, or outreach — run and supervised by a single operator. The fleet replaces headcount for execution while a human owns strategy, brand, and quality control.

Related:Agentic WorkflowHuman-in-the-LoopAI Automation Agency

AI Automation Agency

AI-Native GTM

A service business that designs, builds, and runs automated and agent-driven workflows for clients — outbound, content, operations — and charges for the running system and its output rather than billable hours. It is the productized, agent-native evolution of the marketing agency.

Related:AI WorkforceAI-Native GTMGTM Engineer

GTM Engineer

Emerging Roles

A go-to-market engineer builds and operates the automated systems — data enrichment, lead routing, outbound sequencing, and AI agents — that run a revenue motion traditionally done by hand. The role pairs marketing and RevOps judgment with light engineering (APIs, no-code, scripting) to turn GTM strategy into running software.

Related:AI-Native GTMAI WorkforceForward-Deployed (GTM)

AI Chief of Staff

Emerging Roles

An agent-augmented operating role that triages inbox, prioritizes work, drafts decisions, and coordinates execution across a founder's tools — compressing the coordination overhead a human chief of staff handles into a supervised AI workflow.

Related:AI WorkforceAgentic WorkflowHuman-in-the-Loop

Individual Contributor (IC)

Emerging Roles

In go-to-market, an individual contributor owns and ships the work directly — positioning, content, campaigns, launches — rather than managing a team. In AI-native GTM a single IC supervising a fleet of agents now covers the scope that previously required an entire department.

Related:GTM EngineerAI WorkforceAI-Native GTM

Forward-Deployed (GTM)

Emerging Roles

Borrowed from forward-deployed engineering, a forward-deployed GTM operator embeds directly in a customer's workflow — building, configuring, and running the growth systems in production rather than handing off a strategy deck. The deliverable is a working system, not a recommendation.

Related:GTM EngineerAI Automation AgencyAI-Native GTM

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