The Data Model That Captures Your Business: Metric Trees Explained

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Oct 5, 2025

Vijay Subramanian, CEO of Trace and former data leader at Rent the Runway, dives into the revolutionary concept of metric trees as a data model that mirrors a company's business framework. He reveals how traditional dashboards often miss the mark and how metric trees can enhance analytical workflows by clarifying cause and effect. Vijay shares insights on leveraging these trees alongside AI agents for operational analytics and discusses real-world applications like modeling customer journeys. He also emphasizes the importance of collaboration with business teams to effectively implement this innovative approach.

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INSIGHT

Agents Use Business Graphs, Not Raw SQL

Metric trees plus AI agents create a powerful combination for automating analytic workflows.
Agents can reason over the business graph and invoke analytical functions instead of generating raw SQL on demand.

ADVICE

Operate Trees Like Data Pipeline Assets

Manage metric trees like pipeline artifacts: monitor freshness, reliability, and accuracy.
Reuse nodes across trees to avoid recomputation and to maintain lineage and governance.

INSIGHT

Model Relationships, Not Magical Causality

Most business relationships can be modeled, but causality remains hard and context-dependent.
Metric trees force conversations and enable regressions, but they do not magically infer causation.

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Summary
In this episode of the Data Engineering Podcast Vijay Subramanian, founder and CEO of Trace, talks about metric trees - a new approach to data modeling that directly captures a company's business model. Vijay shares insights from his decade-long experience building data practices at Rent the Runway and explains how the modern data stack has led to a proliferation of dashboards without a coherent way for business consumers to reason about cause, effect, and action. He explores how metric trees differ from and interoperate with other data modeling approaches, serve as a backend for analytical workflows, and provide concrete examples like modeling Uber's revenue drivers and customer journeys. Vijay also discusses the potential of AI agents operating on metric trees to execute workflows, organizational patterns for defining inputs and outputs with business teams, and a vision for analytics that becomes invisible infrastructure embedded in everyday decisions.

Announcements

Hello and welcome to the Data Engineering Podcast, the show about modern data management
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Your host is Tobias Macey and today I'm interviewing Vijay Subramanian about metric trees and how they empower more effective and adaptive analytics

Interview

Introduction
How did you get involved in the area of data management?
Can you describe what metric trees are and their purpose?
How do metric trees relate to metric/semantic layers?
What are the shortcomings of existing data modeling frameworks that prevent effective use of those assets?
- How do metric trees build on top of existing investments in dimensional data models?
What are some strategies for engaging with the business to identify metrics and their relationships?
What are your recommendations for storage, representation, and retrieval of metric trees?
How do metric trees fit into the overall lifecycle of organizational data workflows?
When creating any new data asset it introduces overhead of maintenance, monitoring, and evolution. How do metric trees fit into existing testing and validation frameworks that teams rely on for dimensional modeling?
- What are some of the key differences in useful evaluation/testing that teams need to develop for metric trees?
How do metric trees assist in context engineering for AI-powered self-serve access to organizational data?
What are the most interesting, innovative, or unexpected ways that you have seen metric trees used?
What are the most interesting, unexpected, or challenging lessons that you have learned while working on metric trees and operationalizing them at Trace?
When is a metric tree the wrong abstraction?
What do you have planned for the future of Trace and applications of metric trees?

Contact Info

Parting Question

From your perspective, what is the biggest gap in the tooling or technology for data management today?

Closing Announcements

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The intro and outro music is from The Hug by The Freak Fandango Orchestra / CC BY-SA