ELI5: What even is the Willow Project?

This is an automated archive made by the Lemmit Bot.

The original was posted on /r/explainlikeimfive by /u/Alarmed_Estimate3026 on 2023-06-27 21:08:30+00:00.

I've searched for this before and I can't seem to find it anywhere so I'll just post it here. I've searched this up multiple times and I still don't get it. What the fuck even is the Willow Project?