Perspectives on Enterprise AI

Exploring the intersection of artificial intelligence, cloud architecture, and business transformation.

Agentic AI

What Is an Ontology Layer vs a Semantic Layer, And Why Do I Care?

A semantic layer makes a number trustworthy. An ontology makes an entity navigable. Two terms getting used interchangeably by the people building your data platform, and the difference decides what your AI agents can and cannot do.

September 3, 2026 · 13 min read
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Title card for What Is an Ontology Layer vs a Semantic Layer, And Why Do I Care, second in the What Is... And Why Do I Care series
Title card for Copilot In The Business Process, Dynamics 365's agents writing to the system of record, Copilot Stack Part 4 of 9
Enterprise AI September 2, 2026

Copilot In The Business Process

Part 4 of the Copilot Stack. Dynamics 365's agents send outreach emails and update CRM records without a person approving each action first. What that setting controls, and its cost.

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Title card for The Specialist, on Microsoft Security Copilot's default admin-role inheritance
Enterprise AI August 27, 2026

The Specialist

Part 3 of the Copilot Stack. Security Copilot activates automatically on eligible tenants, and eight admin roles inherit ownership with no review step. What that access actually controls, and what it costs.

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Title card for The Developer's Copilot, on what GitHub Copilot costs now that the credit pool is shrinking
Enterprise AI August 20, 2026

The Developer's Copilot

Part 2 of the Copilot Stack. GitHub Copilot's shared credit pool shrinks by more than a third on September 1, 2026, and the setting that stops it from hurting is off by default.

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Title card for The One Everybody Means, Microsoft 365 Copilot, the assistant layer of the Copilot Stack
Enterprise AI August 13, 2026

The One Everybody Means

Part 1 of the Copilot Stack. Copilot grants no new access, it honors every permission you already have. What changes is discoverability, and that is a SharePoint problem, not an AI one.

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Title card for Copilot Is Not a Product, the opening map of the Copilot Stack series
Enterprise AI August 10, 2026

Copilot Is Not a Product

Part 0 of the Copilot Stack. A brand on a dozen products, five layers with different owners, and the precondition each one inherits before it works at all.

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Title card for The Anatomy of an Agentic System, showing eleven layers of a production agent platform with the model as just one of them
Enterprise AI July 14, 2026

The Anatomy of an Agentic System

Gartner says 40% of agentic AI projects die by 2027, and the model is never the cause. Part 0 of the series: eleven layers, seven organ systems, one resignation followed end to end.

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Title cover: just build it in AI, the fast part of software was never the expensive part
Agentic AI June 18, 2026

Just Build It in AI

The code got cheap. Delivery didn't. Why the most confident sentence in software prices the one part of the job that was already free, and where the real cost moved.

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