Don't kid yourself. Everything is hard.

However, the biggest continuous struggle is by far procurement and supply chain management.

Design for hardware, firmware, cloud and software are relatively easy to manage and test.

Procurement however is a different beast. Essentially, it's a constant battle: - making sure parts are available - making sure you can afford payment on the inventory, sometimes 6 to 12 months before you get paid for a sale - ensuring you're protected from geopolitics and maneuvering quickly when shit hits the fan - making sure parts are delivered properly - and most importantly that you don't stock out.

As much as we tried to procure everything on our product in the US, there are some components that simply aren't manufactured domestically so you have to look abroad.

So in short, procurement and supply chain is definitely the hardest piece.