Test to deploy serverless functions to Vercel.com - [x] Implement functions in a Serverless functions idiomatic way - [x] Typescript - [x] Reason about Edge caching strategy (duration, client + edge) - [x] Requests validation via YUP - [x] Find out about CORS - [x] Build : TS => Not needed - [x] Protect / from directory listing - [x] GCP interop for Cloud SQL - [x] Per env config