Google AI Studio to Cloud Run: deploy, custom domain & security pitfalls

In this video, I walk through the process of taking an application built with a single prompt in Google AI Studio and publishing it directly to Google Cloud Run. As an example - I am building a gamified English grammar trainer called "Conditionally Speaking" and deploy it as a live web application accessible to anyone. I cover how to move beyond the basic "Share" link in AI Studio to a production-ready Cloud Run service. Ialso dive into advanced configuration, including how to map a custom domain (pleasework.pl in this example) using a Global External Application Load Balancer and Network Endpoint Groups, and second method to attach a custom domain via 'Cloud Run domain mappings'. Generally you can read about here here: https://docs.cloud.google.com/run/docs/mapping-custom-domains Crucially, I discuss the security implications of this deployment method. We inspect the network traffic to see how Google securely proxies Gemini API requests so your API keys aren't exposed to the client. However, I also demonstrate a vulnerability: while the keys are hidden, the proxy endpoint itself is allow potential misuse if not properly secured with authentication or code restrictions. Mentioned article on how Google AI Studio securely proxies requests: https://glaforge.dev/posts/2026/02/09/decoded-how-google-ai-studio-securely-proxies-gemini-api-requests/ (highly recommended!) Also, I strongly recommend to read and make sure you understand https://aistudio.google.com/apps?source=faq before you decide to build and publish the app via Google AI Studio. Timestamps: 00:00 - Intro 00:48 - Building the App 02:08 - AI Studio Preview 03:30 - Deploying to Cloud Run 04:20 - Live App Demo 05:30 - Custom Domain (Load Balancer) 07:43 - Security Analysis 08:32 - Proxy Architecture 08:53 - Exploit Demo 11:43 - Custom Domain (Direct Mapping) 13:10 - Testing LB Domain 14:25 - Testing Direct Mapping 15:05 - Updating the App 16:02 - Redeploying 16:25 - Rollbacks 16:50 - Cleanup