# FLOSS 854: The Big Daddy Core

Page: https://stenobird.com/podcast/floss-weekly/floss-854-the-big-daddy-core
Text version: https://stenobird.com/podcast/floss-weekly/floss-854-the-big-daddy-core.md
Podcast: [FLOSS Weekly](https://stenobird.com/podcast/floss-weekly)
Published: 2025-11-12T16:38:00+00:00
Episode link: https://b27a1a7a-dbb9-4922-ac3e-601e2d6ca1e1.libsyn.com/floss-854-the-big-daddy-core
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JSON: https://stenobird.com/v1/public/podcasts/floss-weekly/episodes/floss-854-the-big-daddy-core
Duration seconds: 3640

## Resource

Ochre and Atym.io bring cloud-native containerization to resource-constrained embedded systems using WebAssembly. This approach allows developers to run modular, isolated workloads on everything from Linux to Zephyr-based MCUs.

## Highlights
- Main idea: Ochre acts as a lightweight WebAssembly VM that enables 'Docker on a diet' for embedded hardware
- Practical takeaway: Developers can lift and shift existing C code into containers to gain memory protection without a full rewrite
- Failure mode: Traditional Docker is too heavy for MCUs, requiring a much smaller footprint for low-memory environments
- Practical takeaway: Modular containers allow for updating specific drivers or features without needing to recertify the entire device firmware
- Main idea: The technology enables 'Software Defined IoT' by decoupling hardware-specific firmware from application logic

## Topics

WebAssembly, Embedded Systems, Containerization, Zephyr OS, IoT Security, Microcontrollers, Cloud Native, Ochre VM

## Chapters
- 1:00 — Introduction to Ochre and Atym.io: The hosts introduce Jason Shepherd to discuss the intersection of WebAssembly, containers, and embedded systems.
- 6:00 — The Vision for Cloud-Native Embedded: Jason explains how Atym.io brings cloud-native principles and continuous delivery to the embedded space using the Apache 2.0 licensed Ochre.
- 10:25 — Overcoming the Overhead of Docker: A discussion on why traditional container runtimes are too resource-intensive for devices with limited RAM and the benefits of WebAssembly.
- 15:20 — Targeting Low-Power MCUs: Exploring the use case for running containers on modern microcontrollers with very small memory footprints.
- 19:55 — Security and Certification Benefits: How containerization helps manage the Cyber Resilience Act and allows for updating code without re-certifying the entire firmware stack.
- 24:30 — Ahead-of-Time Compilation: Details on how Atym.io provides AOT compilation to translate WebAssembly into native instructions for specific hardware.
- 29:00 — Software Defined IoT: The emergence of SD-IoT and the security advantages of using WebAssembly to mitigate C-based memory vulnerabilities.
- 47:20 — The Future of Embedded Networking: Discussing the path forward for software-defined networking and the integration of WebAssembly into the broader ecosystem.

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## Transcript

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