---
title: "The Postmodern Data Stack is AI"
description: "Three strategic acquisitions in nine months signal the fusion of the modern data stack with AI. Snowflake, ClickHouse, \u0026 Datadog are racing to own AI observability."
categories: ["AI","data","infrastructure"]
keywords: ["postmodern data stack","modern data stack","AI data infrastructure","Snowflake Observe acquisition","ClickHouse Langfuse","Datadog Metaplane","data observability","LLM observability","AI agents","semantic layer"]
ai_summary: "Three acquisitions—Snowflake/Observe, ClickHouse/Langfuse, Datadog/Metaplane—prove the modern data stack is fusing with AI. Observability is the first beachhead; evaluations \u0026 agent orchestration are next."
date: 2026-01-20
lastmod: 2026-07-20
canonical_url: https://www.tomtunguz.com/the-postmodern-data-stack-is-ai/
author: "Tomasz Tunguz"
---


After a decade of success, the [modern data stack has entered consolidation](/fivetran-dbt-merger-bundling-phase/). What comes next?

The postmodern data stack is AI.

The modern data stack created more than $100 billion in market cap with a simple promise : move the data via ETL, transform it inside a cloud data warehouse, put a semantic layer on top of it to unify metric definitions, & analyze it through BI.

{{< email_image src="w94w7gmlfm799anzsdqk" alt="The original modern data stack architecture with ETL, warehouse, semantic layer, & BI" width="540" height="542" >}}

This worked brilliantly for structured data, numerical data found within tables. But AI & businesses thrive on unstructured data, such as call transcripts, status reports, web searches, & PDFs.

The semantic layer, especially within large organizations with huge data sets, must now combine structured & unstructured information at scale, critical because all of it feeds AI & powers agents.

{{< email_image src="ykucfraei39pz3f4cssr" alt="The postmodern data stack showing AI integration with vector databases, file systems, & agents" width="540" height="431" >}}

Strategic acquisitions prove this shift is already underway. The Datadog acquisition of Metaplane[^3], the Snowflake acquisition of Observe[^1], & the ClickHouse acquisition of Langfuse[^2] are the most concrete strategic moves reinforcing this fusion.

| Acquirer | Target | Category | Value | Date |
|:---------|:-------|:---------|------:|:-----|
| [Datadog](https://www.datadoghq.com/) | [Metaplane](https://www.metaplane.dev/) | Data Observability | Undisclosed | Apr 2025 |
| [Snowflake](https://www.snowflake.com/) | [Observe](https://www.observeinc.com/) | Observability | $1B | Jan 2026 |
| [ClickHouse](https://clickhouse.com/) | [Langfuse](https://langfuse.com/) | LLM Observability | Undisclosed | Jan 2026 |

All of these initial acquisitions focus on observability & understanding AI systems. First, the volumes of data are enormous & essential to sustaining the breakneck pace of AI innovation.

Second, observability helps inform roadmaps : how are customers using AI? Where are they not successful? How can a business help them grow & expand?

We will see many more acquisitions that lead to a combined postmodern & AI stack, accelerating the consolidation that has already started. In addition, there are many pieces of the AI stack not represented here, such as evaluations & agent orchestration.

Those are next.

[^1]: [Snowflake Announces Intent to Acquire Observe](https://www.snowflake.com/en/news/press-releases/snowflake-announces-intent-to-acquire-observe-to-deliver-ai-powered-observability-at-enterprise-scale/)
[^2]: [Langfuse is Joining ClickHouse](https://langfuse.com/blog/joining-clickhouse)
[^3]: [Datadog Acquires Metaplane](https://www.datadoghq.com/blog/datadog-acquires-metaplane/)