Answer
Roslyn provides syntax trees, semantic models, analyzers, refactoring, and code generation. It is compiler-as-a-service, powering tooling and source generators.
Quick Answer
Roslyn is the C# and VB compiler exposed as an API. It provides parse trees, semantic models, diagnostics, and code fixes that power Visual Studio IntelliSense, analyzers, and code generators. Source Generators hook into Roslyn to inspect your code at compile time and generate additional C# files before compilation finishes.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ