# Mender-MCU on Zephyr: What should we focus on next?

**URL:** https://hub.mender.io/t/mender-mcu-on-zephyr-what-should-we-focus-on-next/8222
**Category:** Announcements
**Created:** [March 30, 2026, 9:00am UTC](https://hub.mender.io/t/mender-mcu-on-zephyr-what-should-we-focus-on-next/8222 "2026-03-30T09:00:41Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![TheYoctoJester](https://yyz2.discourse-cdn.com/flex036/user_avatar/hub.mender.io/theyoctojester/32/1444_2.png) [@TheYoctoJester](https://hub.mender.io/u/TheYoctoJester)
#### Post date: [March 30, 2026, 9:00am UTC](https://hub.mender.io/t/mender-mcu-on-zephyr-what-should-we-focus-on-next/8222/1 "2026-03-30T09:00:41Z")

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We’re collecting feedback from anyone working with [mender-mcu](https://github.com/mendersoftware/mender-mcu) on Zephyr (or considering it). The preview release uses ESP32-S3-DevKitC as the reference platform and has generic support for MCUboot-compatible boards, and we want to understand what matters most to you. Whether that’s resource constraints, networking, integration, or something we haven’t thought of yet.

Two quick polls, then feel free to elaborate in the replies.

### What are your biggest challenges running Mender on MCUs?

_Poll ([view on site](https://hub.mender.io/t/mender-mcu-on-zephyr-what-should-we-focus-on-next/8222/1))_

### If you could choose the communication protocol between your MCU and the Mender server, what would you prefer?

_Poll ([view on site](https://hub.mender.io/t/mender-mcu-on-zephyr-what-should-we-focus-on-next/8222/1))_

If you have constraints we haven’t listed, like unusual network topologies, specific MCU families, regulatory requirements: we’d especially like to hear about those. Reply below.