Keynote: Zephyr as the Foundation for a Microcontroller SDK
summary
Claim: Zephyr serves as the foundation for a vendor SDK that combines proprietary drivers and stacks with an open RTOS and tooling. Nordic builds and ships the nRF Connect SDK, uses west device tree kconfig twister for repo, build and test, keeps clean forks and upstream-first contributions, and supports BLE LTE and Wi‑Fi across constrained MCUs. The surprising metric is stability: 20 releases in five years with a 2.0.0 tag, demonstrating the model scales and actually works.
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