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    Guided course · Architecture and Design in .NET

    Microservices and Messaging in .NET: back to the course

    Module 1 · Boundaries and Communication · Lesson 3 of 16

    Message Contracts: Commands, Events, Versioning and Tolerant Readers

    15 min readTechInterviewNotes Editorial TeamUpdated 13 Oct 2026Save

    This lesson comes with Full Access

    Its text, video and cheat sheet open with Full Access. This course's free lessons open without an account. Start with Modular Monolith vs Microservices: Boundaries, Data Ownership and When to Split.

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