PENTALINK
Case Study

Turning Data into Queryable Knowledge — A Semantic Layer and AI Agents

Reporting was rebuilt by hand every month, with the real knowledge locked in a few heads. How a semantic layer turned a central Snowflake platform into queryable, governance-compliant knowledge.

Industry
cross-industry
Services
Data Platform
Stack
Snowflake, Semantic Views, KI-/LLM-Agenten, Row-Level Security
Go-live
≤ 90 days (partly 30)

The client had hit a familiar ceiling. A capable team rebuilt the monthly reporting again and again. The real knowledge — what a cryptic dimension means, why a milestone payment is flagged the way it is — sat in a few heads. Self-service was impossible, AI-assisted questions out of reach, and the security bar high: this data could not simply be exposed.

The lever was meaning, not technology

We set the central Snowflake platform live — with a 90-day go-live guarantee that, in parts, we met in thirty. The decisive lever was not plumbing but meaning. On top of the technical joins we built semantic views: layers that carry business context and explanations, not just keys and sums.

Does this sound familiar?

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Where a plain view says "equals," the semantic view explains "why"

Where a plain view says "this attribute equals that column," the semantic view explains what it represents — milestone payments, accruals, the logic behind a cost centre. Much of that description was AI-generated and then enriched by people exactly where it mattered. On the same layer sit AI agents that answer business questions directly, and row-level security reaching down to amount and posting level.
The data never leaves that environment and is not sent to external AI providers.

Crucial for finance data: the AI agents run in a controlled environment on our own AWS/Snowflake infrastructure in Frankfurt.

From 3–4 hours to under 10 minutes

The platform became a single source of truth the whole team can see and query. Instead of recreating reports every month, business users ask their questions directly — "which cost items rose?", "where are the forecast deviations?" — and pull the answers straight into PowerPoint and Excel. The semantic layer turned scattered, tacit know-how into a documented, reusable asset; when a knowledge-holder leaves, the understanding stays. Every role sees only what it is permitted to see. Analysis time for ad-hoc requests dropped from 3–4 hours to under 10 minutes.

Three things you can take away

  1. Meaning beats plumbing. Technical joins connect tables; a semantic layer explains what they mean. That's precisely what makes self-service possible in the first place.
  2. Governance isn't a showstopper for AI. Sovereign infrastructure and row-level security down to posting level make AI-assisted questions safe even on sensitive finance data.
  3. Document knowledge before it walks out the door. Tacit know-how sitting in a few heads is a risk. A documented, semantic asset survives staff turnover.
Sascha Lübow-Westendorf

Partner & Founder at Pentalink. Advisor for Data Architecture, Digital Finance and data-driven business management.

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