While balena is great for getting up and running quick, you'll quickly run into issues when more specific application requirements arise, or you need to tighten down security.

It's fantastic for small-scale IoT deployments, but you very much need to play nice in their ecosystem, and there's many features missing for deployment and version management still, and balenaOS and the balena supervisor can often introduce breaking quirks, and managing networking is a nightmare. We're very happy with how it allowed us to get off the ground and running quickly, but are moving to a more "traditional" build using yocto on its own moving forwards.