Doing Intentional Community: Expanded 2023 Edition

What exactly is "intentional community?" And how does one go about co-creating it? Are there typical hurdles to overcome? In the Green/Sustainable Living Movement, the term "community" often means folks coming together to create some form of shared home space: from co-housing co-ops in cities, to permaculture or off-the-grid nature-based country retreats...from separatist women's or people of color lands, to communities aimed at unplugging from the wider world's repressive "systems" as much as humanly possible.
The illustrated, creative non-fiction account DOING INTENTIONAL COMMUNITY: Expanded 2023 Edition follows building a certain type of artistic/spiritual co-home adventure on the Big Island of Hawaii from the ground up...and how this particular, now-worldwide sense of community continues to transform today. Like a prismatic drop in the ocean, beyond just being a collection of individuals, global "intentional community" can also equate to entire villages, cities, and nations in the process of cultivating a common history and shared economic/political/spiritual goals. What is "world peace, " if not that?