You can create a web app directly from Customer Insights Journeys and then deploy it to your hosting service, like Azure or Vercel. To test it, I created the event page of Roasting Flow which will display the events of my fake coffee shop 😉

I find the idea super interesting especially with the possibilities of extending and branding the application with AI. Because you host the site yourself, you do not need Power Pages capacity for the public event website. You are still responsible for your hosting costs and the licensing of Customer Insights - Journeys.