---
title: B2B SaaS Fundamentals — RGM Training
url: https://realgrowthmatters.com/training/b2b-saas-growth/b2b-saas-fundamentals/
updated: 2026-06-10
source_html: https://realgrowthmatters.com/training/b2b-saas-growth/b2b-saas-fundamentals/
---

[Home](../../../index.html) › [Training](../../index.html) › [B2B SaaS Growth](../index.html) › B2B SaaS Fundamentals

RGM° · Training

# B2B SaaS Fundamentals

SaaS combines product, marketing, sales, CS into one revenue motion. Recurring revenue creates structurally different incentives.

### What you will learn

1. [Why B2B SaaS growth is its own discipline](#why)
2. [The SaaS business model](#model)
3. [Sales motion types](#motion)
4. [The funnel](#funnel)
5. [Core metrics](#metrics)
6. [Stage-appropriate strategies](#stages)
7. [Advanced playbook](#advanced)
8. [Common mistakes](#mistakes)
9. [Checklist](#checklist)

## Why SaaS is its own discipline

SaaS combines product, marketing, sales, and customer success into a single revenue motion. The recurring-revenue model creates structurally different incentives from one-shot sales: customer success becomes a growth lever; expansion is more efficient than acquisition; churn is the silent killer.

## The SaaS business model

- Recurring revenue (monthly or annual contracts).
- Multi-tier pricing typically.
- Self-serve, sales-assisted, or sales-led.
- Expansion as growth (upsell, cross-sell, seat expansion).
- Churn as cost (lost revenue plus replacement acquisition).
- NRR as headline health metric.

## Sales motion types

| Motion | ACV range |
| --- | --- |
| Self-serve / PLG | $10–$5,000 ACV |
| Sales-assisted PLG | $5,000–$50,000 ACV |
| SMB sales-led | $5,000–$50,000 ACV |
| Mid-market sales | $25,000–$250,000 ACV |
| Enterprise sales | $100,000+ ACV |

## The B2B SaaS funnel

- Awareness (impression, content view).
- Education (content engagement, newsletter).
- Lead (form fill, demo request).
- MQL / MQA (qualified lead/account).
- SQL / SQO (sales qualified).
- Opportunity (active deal).
- Customer (closed-won).
- Activation (onboarding milestone).
- Retention (renewal, expansion).

## Core metrics

- ARR / MRR.
- New ARR vs expansion ARR vs churned ARR.
- NRR (Net Revenue Retention).
- GRR (Gross Revenue Retention).
- CAC.
- LTV (cohort-based).
- Payback period.
- Magic number (efficiency).
- Logo retention vs revenue retention.
- NPS / CSAT.

## Stage-appropriate strategies

- **Pre-PMF:** Customer development; product iteration; founder-led sales.
- **Early ($1M–$10M ARR):** Repeatable motion; first sales hires; content engine.
- **Scale ($10M–$50M ARR):** Specialization; sales playbook; marketing engine.
- **Mature ($50M+):** Multiple motions; enterprise sales; international.

## Advanced playbook

- Annual customer cohort analysis.
- Net dollar retention as strategic priority.
- Product-marketing partnership formalized.
- Customer success as growth function.
- Pricing experimentation discipline.
- Enterprise readiness checklist.
- International expansion methodology.
- Partner channel strategy.
- Annual capital efficiency review.
- Multi-motion orchestration (PLG + sales).

## Common mistakes

- Acquisition focus while churn destroys ARR.
- Wrong motion for ACV.
- Sales hired before PMF.
- Marketing without sales alignment.
- NRR not tracked.
- Expansion under-invested.
- Cohort analysis skipped.
- Pricing static for years.
- Customer success seen as support, not growth.
- International expansion premature.

## Operating checklist

- ARR, NRR, GRR tracked monthly
- Sales motion matched to ACV
- Cohort retention dashboards
- Sales-marketing alignment formalized
- Customer success as growth function
- Pricing reviewed annually
- Enterprise readiness assessed
- International expansion plan or rationale
- Capital efficiency tracked
- Multi-motion strategy documented

## Sources and further reading

- David Skok, For Entrepreneurs
- Tomasz Tunguz B2B SaaS research
- Christoph Janz, Point Nine
- OpenView SaaS benchmarks
- Bessemer State of the Cloud
- Hiten Shah SaaS writing
- Reforge growth curriculum
- Lenny Rachitsky newsletter
- SaaS Capital benchmark research
- RGM Growth Foundations series
- Patrick Campbell, ProfitWell
- Mark Roberge, "The Sales Acceleration Formula"

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Part of the [B2B SaaS Growth](../index.html) series.