Scalability and Maintenance in Embedded Systems Questions

Approaches for keeping firmware maintainable and scalable as product complexity and team size grow. Topics include modular code organization, abstraction and separation of concerns, configuration and feature gating for multiple hardware variants, protocol versioning and backward compatibility, build and test automation including hardware in the loop testing, continuous integration for firmware, and clear documentation and ownership. Discuss strategies for safe refactoring, deprecation policies, and how to balance short term delivery with long term code health. Include considerations for monitoring, remote debugging, and long term operational support.