Dave Mariani

Dave Mariani LinkedIn Profile

Dave is the founder of AtScale and is the Chief Technology Officer. Prior to AtScale, he was VP of Engineering at Klout & at Yahoo! where he built the world’s largest multi-dimensional cube for BI on Hadoop. Mariani is a Big Data visionary & serial entrepreneur.

July 13, 2026

The Real AI Sovereignty Fight Is About Meaning

In the last few weeks, the sovereignty conversation has moved from academic to urgent. Palantir's Alex Karp went on CNBC to explain the logic behind his company's partnership with NVIDIA and spent 20 minutes arguing that enterprises are handing frontier…

June 25, 2026

The Semantic Layer’s New Job

Eighteen months ago, Blue Yonder’s analytics engineering team made a decision most data organizations haven’t made yet: they stopped being a BI team. They saw what was coming. AI agents don’t just need access to data. They need to understand…

June 23, 2026

Four AI Pillars and a Wide-Open Opportunity

I just got back from the Databricks Data & AI Summit, and I have a lot to unpack. This was the biggest DAIS yet, with 31,309 attendees, and the energy was unmistakable. More importantly, Databricks came in with a sharpened…

June 11, 2026

How Anthropic’s AI Accuracy Went from 21% to 95%

Anthropic's data science and engineering team runs its internal analytics on Claude, and this week, they published the accuracy figures. Without a semantic layer, the answers were right 21% of the time. With one, accuracy improved to 95%, and some…

May 22, 2026

10 Things We Learned at the 2026 Semantic Layer Summit

Most enterprise AI governance conversations start with LLMs. But when an AI agent returns a wrong answer, the failure usually traces back to a much simpler problem: the business logic behind the answer was never defined in a place the…

April 30, 2026

BI Tools Keep Trying to Own Your Semantic Layer

Every decade, someone reinvents the BI-embedded model. Every decade, customers end up migrating off it. The semantic layer is the context layer for AI, and putting it inside one BI tool was the original sin. Last week, Omni raised a…