I can't agree with this enough. Willow[0] (disclaimer - I'm the creator) just wouldn't be possible without the robust Espressif ecosystem, libraries, code samples, docs, etc. Let alone all on a finished product (ESP BOX, $50) available worldwide through their distribution channels! We have a lot of background and experience in this and related fields but the fact remains we went from concept to initial release in less than six weeks (with two part time devs - if you include me, which you shouldn't haha).

[0] - https://github.com/toverainc/willow/