Microsoft Build 2025 took place from May 21 to 23, 2025 in Seattle, Washington, and was also fully online. Build is Microsoft's annual developer conference, where software developers, IT professionals and tech companies come together to discover Microsoft's latest tools, technologies and vision. This year it was all about the role of AI agents, the integration of multiple AI models, and how Copilot is emerging as the heart of modern, intelligent applications.

Below you can read the most important innovations announced during Build 2025.

Cosmos DB integrated into Microsoft Fabric

Microsoft has announced that Azure Cosmos DB (NoSQL) can now be used directly within Microsoft Fabric. This enables organizations to combine their real-time operational data with analytics processes and AI workloads, without having to move data first. This provides a powerful combination of speed, scalability, and integration within a single data platform.

Copilot Tuning for customized AI

With Copilot Tuning , companies can build their own versions of Microsoft 365 Copilot, tailored to internal processes and data. Using a low-code interface within Copilot Studio, organizations can train their AI agents to respond, think, and communicate exactly the way their teams do.

GitHub Copilot becomes a standalone programming agent

GitHub Copilot evolves from a smart assistant to a real autonomous developer. Using GitHub Actions, Copilot can now independently perform programming tasks such as fixing bugs, writing code, or updating documentation. This turns Copilot from a co-pilot into a full-fledged programming colleague.

Microsoft Entra introduces Agent IDs

To enable AI agents to function securely within enterprise environments, Microsoft is launching the Entra Agent IDThis new identity system provides authentication, access control, and governance for AI agents, allowing them to interact with systems in a secure and controlled manner just like human users.

Using your own AI model in Copilot Studio

Another big step in personalization is that you can now integrate your own AI models in Copilot Studio. This allows organizations to deploy their own language models or specialized AI within the Copilot environment, leading to greater control and improved performance on domain-specific tasks.

Orchestrating Multiple AI Agents in Copilot Studio

Copilot Studio now also supports multi-agent orchestration, or the coordination of multiple AI agents working together on complex tasks. This capability allows agents to, for example, collect data, summarize it, and perform actions while a human monitors and adjusts as needed.

New Solution Workspace in Power Apps

Power Apps gets a new look Solution Workspace, where developers can work on applications together with AI agents. Here they can design data models, map out process flows and generate interfaces – all supported by smart suggestions from AI.

Agent Feed: Collaborate with Agents in Power Apps

With the introduction of the Agent Feed allows users to directly communicate and collaborate with AI agents within Power Apps. This feed acts as a sort of activity feed and collaboration tool, where users can issue commands and track progress.

Connecting Data Agents from Fabric to Copilot Studio

Microsoft now makes it possible to data agents from Fabric to Copilot Studio. This gives your AI agents direct access to structured and unstructured data in Microsoft OneLake, enabling deeper insights and contextual actions.

Digital Twin Builder in Microsoft Fabric

With the new one Digital Twin Builder allows users to create digital representations of physical objects, processes or systems. These 'digital twins' are updated in real time and form a powerful bridge between the physical world and data-driven decision-making.

xAI's Grok 3 Now Available on Azure

In collaboration with Elon Musk's xAI, the models Grok 3 and Grok 3 Mini available through Microsoft Azure. This integration adds powerful alternative language models to the Azure AI ecosystem and increases developer choice.

Windows AI Foundry

Microsoft launches with Windows AI Foundry a new set of tools for building, training, and deploying AI models on Windows PCs. This enables developers to run AI locally on devices with GPUs, CPUs, and NPUs, which is particularly interesting for edge applications.

NLWeb: natural language for websites

With NLWeb Microsoft is introducing an open initiative that enables websites to be enhanced with natural language interfaces. This turns websites into interactive experiences where visitors can search, ask, and navigate in their own words.

Azure AI Search integrated into Copilot Studio

Finally, Microsoft has Azure AI Search built into Copilot Studio. This enables AI agents to perform advanced searches within your company’s data, generating faster, smarter answers.

Closing note

Microsoft Build 2025 shows that the future of software development is increasingly about collaboration with AI agents. Whether coding, modeling, or searching, Microsoft now offers developers a complete ecosystem to build AI solutions that truly work for them. The combination of agent technology, powerful data platforms, and custom AI marks a major step toward an intelligent, automated digital workplace.

Want to watch all the sessions or experiment yourself? Visit the Official Microsoft Build 2025 Page.