Microsoft Copilot Studio Gets Massive Speed Boost with .NET 10 WebAssembly Upgrade
Microsoft has pushed a critical performance upgrade for Copilot Studio, moving its browser-based engine from .NET 8 to .NET 10. The move slashes load times and improves execution speed for enterprise users.
“The upgrade was seamless and delivered immediate benefits,” said a Microsoft spokesperson. “We saw a significant reduction in startup latency and faster response times across the board.”
Background
Copilot Studio runs C# code directly in the browser using .NET WebAssembly (WASM). The team previously upgraded from .NET 6 to .NET 8, noting gains in performance and innovation.
The latest jump to .NET 10 required only updating target framework files and checking dependency compatibility. The new build is now live in production.
What This Means
Enterprise developers using Copilot Studio will experience near-instant bot responses and smoother interactions. The upgrade also simplifies deployment workflows.
“Automatic fingerprinting of WASM assets eliminates manual cache-busting and integrity checks,” the spokesperson explained. “Our custom renaming script is now obsolete.”
Key Improvements in .NET 10
- Automatic Fingerprinting: Each asset filename includes a unique identifier, providing cache-busting and integrity without manual steps.
- Smaller AOT Output: The WasmStripILAfterAOT setting is now enabled by default, stripping unneeded IL from AOT builds to shrink package size.
- Dual-Engine Strategy: Copilot Studio still ships both JIT (fast startup) and AOT (peak performance) engines, now with deduplicated shared files.
Developers loading the runtime inside a WebWorker must set dotnetSidecar = true during initialization to ensure correct behavior.
The upgrade underscores Microsoft’s commitment to making Copilot Studio faster and more efficient for enterprise customers.
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