Brady Gentile from Cloudflare's product team has written an App Developer Playbook embedded within the developer documentation page. The playbook provides clear ways for app developers to approach promotional strategies, including sharing with online communities like HackerNews, Product Hunt, or reddit; optimizing apps for discoverability; promoting through personal properties; spreading word to existing users; and forming a presence on social media. Additionally, blogging about the app's features and benefits can help increase exposure.