--- title: Meridian (Google) - Definition & Examples | RGM® Glossary url: https://realgrowthmatters.com/glossary/meridian-google/ updated: 2026-06-10 source_html: https://realgrowthmatters.com/glossary/meridian-google/ --- Growth Glossary — Definition SHT MERIDIAN-GOOGL # Meridian (Google) Google's open-source MMM library. A working definition from the RGM marketing glossary. Google's open-source MMM library. Term : Meridian (Google) Field : Attribution Category : Attribution ## A working definition Read that twice.Treat Meridian (Google) as a conversion-crediting method with a clear scope. Two people using the term should mean the same thing. Google's open-source MMM library. Attribution assigns credit for outcomes to touchpoints along the customer journey. No attribution model is fully accurate — each has trade-offs between simplicity, accuracy, and bias toward certain channels. Within Attribution, Meridian (Google) is a conversion-crediting method. Get the definition right and the work that follows gets easier. ## How it works Look at it this way.Meridian (Google) is no fixed dial. How it behaves depends on your audience, your channel mix, and the strategy around it. Think of Meridian (Google) as context-bound. A small shop reads it simply; an enterprise reads it with more nuance. That is normal -- Meridian (Google) is shaped by audience and channel mix. Read Meridian (Google) without care and the plan wobbles; be precise and the read holds. The working rule is plain. Agree what Meridian (Google) covers first, then act on it. Skip that order and Meridian (Google) loses its shared meaning, and two teams end up measuring two different things. Read that twice. ## When teams use it Pick one definition.Use Meridian (Google) when it changes a choice. If it is not driving a decision, it is vocabulary, not leverage. Use Meridian (Google) when it changes an outcome. For attribution teams, that tends to be three recurring moments. With no choice live, Meridian (Google) is good to know, not to chase. 1. **Setting budget.** Meridian (Google) helps decide which channel gets the next dollar. 2. **Choosing a metric.** Meridian (Google) flags whether the number you report is causal. 3. **Comparing options.** Meridian (Google) keeps a head-to-head from fooling the reader. ## An example with real numbers Look at it this way.To make Meridian (Google) concrete, the case below uses Casper and figures from public reporting plus RGM analysis. Consider Casper. Running a last-click audit, the team put Meridian (Google) at the center of the call. With a clean baseline and one fixed definition of Meridian (Google), they read what moved: 35% of credited sales proved non-incremental. The discipline is the lesson. The numbers behind Meridian (Google) -- illustrative only, RGM analysis | Stage | What the team did | The reason | | Baseline | Read the starting point before any change to Meridian (Google). | A reference to judge against. | | Define | Locked the scope of Meridian (Google) so it stayed stable. | A shared definition up front. | | Act | A last-click audit — one variable. | Only one thing moved. | | Result | 35% of credited sales proved non-incremental | A call backed by the read. | These Meridian (Google) numbers are illustrative -- RGM analysis. The structure travels; the specific figures do not. ## Where teams go wrong Worth a slow read.Teams slip on Meridian (Google) in four familiar ways. Each makes a soft assumption look like a precise number. - **No segments.** Treating Meridian (Google) as one number for all. Break it out before you trust it. - **No context.** Reporting Meridian (Google) with no baseline. A bare number cannot be judged. - **Wrong target.** Treating Meridian (Google) as the goal. The goal is the outcome it predicts. - **Raw benchmarks.** Stacking Meridian (Google) against rivals blind. Normalize for margin, pricing, and sales cycle. ## Questions teams ask What does Meridian (Google) mean? Google's open-source MMM library. Agree the scope of Meridian (Google) before the planning starts. Why does Meridian (Google) matter for marketers? Meridian (Google) earns its place when it shapes a real decision. The leverage is in correct use, not in the word itself. How do teams use Meridian (Google)? Meridian (Google) supports a real choice: where money goes, what gets measured, which option wins. The Casper case traces it. What is the most common mistake with Meridian (Google)? Treating Meridian (Google) as one blanket rule and reporting it with no baseline. Both hide a soft assumption. What does Meridian (Google) mean? : Google's open-source MMM library. Agree the scope of Meridian (Google) before the planning starts. Why does Meridian (Google) matter for marketers? : Meridian (Google) earns its place when it shapes a real decision. The leverage is in correct use, not in the word itself. How do teams use Meridian (Google)? : Meridian (Google) supports a real choice: where money goes, what gets measured, which option wins. The Casper case traces it. ### Related reading ### Related terms