Stack Internal is a secure knowledge platform that centralizes verified expertise to help enterprises accelerate development, reduce subject matter expert workload, and ensure compliance across teams and systems.
With Stack Internal, humans and AI work together to automate knowledge curation and let teams focus on delivering value. Our mission is to be the essential knowledge toolkit for builders, elevating their craft by reducing their cognitive load and delivering measurable productivity gains. Stack Internal is how we get you there.
Reinventing the enterprise brain
As a developer-first company, we know that developers today are coping with a huge and growing cognitive load: dozens of disparate tools, knowledge scattered across platforms, and AI outputs that are often inaccurate or untrustworthy. Organizations are heavily invested in AI programs, yet without a reliable, human-validated knowledge base, many of those pilots flop. Overall, as many as 95% of generative AI pilots fail, according to the MIT Media Lab/Project NANDA. To produce results teams can leverage confidently, AI needs a wealth of trusted, community-vetted content.
Historically, enterprise knowledge was almost entirely human-powered, with employees creating, curating, and maintaining the organization’s “second brain.” But there was a cost to all that human effort. Instead of devoting their time to innovation and creativity, developers spent much of it managing content and maintaining the knowledge system. That created silos and hampered progress.
Stack Internal represents a shift from human effort alone to a human + AI partnership designed to reduce cognitive load, automate the capture and curation of information, and allow builders to put more energy into delivering value. Stack Internal centralizes expertise, validates it with human review, and makes it accessible inside the flow of work: within Microsoft Teams, through Microsoft Copilot, or right in the IDE. The results: Faster onboarding, fewer repeated questions, fewer hallucinations, and measurable improvements in productivity and compliance.
What makes this moment especially exciting is our deep partnership with Microsoft. Together, we’re modernizing the enterprise’s second brain by bringing high-quality knowledge into every Microsoft workflow. Our goal is to empower developers to deliver high-quality code faster, leverage AI tools with confidence, and funnel their expertise back into the enterprise knowledge base to create a continuously self-enriching body of knowledge.
Built on Azure and embedded throughout the Microsoft 365 ecosystem, Stack Internal integrates seamlessly with Copilot. Knowledge flows both ways: Copilot surfaces human-validated answers when you need them and contributes new learnings back into the platform.
This bidirectional integration transforms how teams operate. Developers spend less time searching and more time building. AI copilots become smarter and more reliable. And every interaction strengthens the collective intelligence of the enterprise.
This isn’t just a rebrand; it’s a turning point in how humans work with AI. Together, Stack and Microsoft are establishing a living foundation for enterprise AI, allowing companies to accelerate innovation, safeguard institutional knowledge, and modernize securely and confidently.
The Stack Internal solution
Stack Internal is more than a knowledge management system. It’s an enterprise knowledge layer that ingests, validates, and delivers knowledge into the tools and workflows organizations rely on.
Here’s what that interface looks like in action:
Knowledge Ingestion
New to Stack Internal, Knowledge Ingestion brings high-value content from tools like Confluence and Microsoft Teams into Stack Internal, transforming fragmented information into a centralized knowledge base of high-quality atomic questions and answers. Using AI to structure and score imported content, the system ensures only accurate, relevant knowledge is published. Every piece of information is scored and verified through a scalable human-in-the-loop process to ensure accuracy and compliance with enterprise governance standards.
Take a look at how Knowledge Ingestion works:
This feature addresses one of the biggest challenges faced by the enterprise: knowledge that is fragmented and disconnected across systems. By seeding Stack Internal with already-proven content, the Knowledge Ingestion accelerates onboarding and shortens time-to-value. It also provides a strong foundation for AI copilots, search, and agentic workflows. The Knowledge Ingestion also delivers secure ingestion with confidence scoring and review controls, streamlined workflows to validate content at scale, and faster access to answers where developers work.
Model Context Protocol (MCP) Server
Now available to Stack Internal customers, the Model Context Protocol (MCP) Server is a secure integration layer that connects AI developer tools like GitHub Copilot, ChatGPT, and Cursor to an organization’s verified knowledge in Stack Internal. Even enterprise agents can take advantage of this new feature. By grounding AI outputs in human-validated enterprise content, the MCP Server reduces hallucinations, improves accuracy, and ensures that responses are trustworthy and properly attributed.
Here’s how the MCP Server operates for users:
Running inside customer infrastructure for full privacy and control, the MCP Server also supports that all-important bidirectional knowledge flow: AI agents can both draw from and contribute to the enterprise knowledge base. This keeps content fresh, reduces the need for context switching, and allows developers to work entirely within the flow of their tools.
The Stack Internal MCP Server delivers faster, more reliable answers for any builder at your enterprise; stronger governance for the enterprise; continuous ROI on enterprise knowledge investments; and a faster, safer path to AI adoption across the enterprise. It’s a foundation for AI you can trust.
Stack Overflow Microsoft 365 Copilot Connector
With the Microsoft 365 Copilot connector, Stack Internal becomes a living, continuously updated foundation for AI-native workflows. One of many pre-built integrations, it seamlessly connects Stack Internal with Microsoft 365 Copilot, allowing users to access community-vetted Q&A content directly in their Copilot and Microsoft Search experiences.
Take a look at the connector:
Once configured, the connector sources an organization’s Stack Internal knowledge base so that developers, engineers, and business users can surface contextual, human-validated answers without leaving their Microsoft 365 environment.
The connector goes beyond simple keyword matching: users can ask technical, process, or product-specific questions in natural language and receive grounded, relevant responses. This means copilots can draw from the same verified enterprise knowledge that powers Stack Internal—improving accuracy, reducing duplication, and speeding up decision-making.
Extending Stack Internal into Microsoft 365 gives developers instant access to verified, organization-specific expertise directly in Copilot. No need to bug the engineering team for help understanding a new feature; the answers are right in front of you.
Across the board, enterprise organizations benefit from a tighter connection between daily workflows, Microsoft’s AI ecosystem, and the knowledge intelligence layer that keeps teams productive and aligned.
The Stack Overflow difference
Stack Internal ensures that knowledge is available wherever work happens, whether it’s a chat platform, an IDE, a copilot, an assistant, or a coding agent. The platform gives developers and engineers instant access to trusted answers; it serves as a single source of truth to keep knowledge up-to-date, searchable, and secure.
With Stack Overflow Internal, you get a knowledge intelligence layer strategically built for the enterprise—a partnership between humans and AI that accelerates innovation and reduces cognitive load. The downstream benefits are big: faster onboarding because users can self-serve the knowledge they need, fewer repeated questions, fewer hallucinations, and quantifiable productivity gains that help enterprise organizations modernize with confidence.
This is the Stack Overflow difference: knowledge that starts where work happens, is strengthened through AI + human validation, and flows seamlessly into the enterprise’s most critical tools and AI systems.