These are my defaults for creating a new web app project:

• Codebase structure: Modular monolith
• Folder structure: Top level folders based on features / pages / domains, subfolders based on clean architecture-esque layers
• Hosting: Vercel
• Language (frontend & backend): Typescript
• Server runtime: Node.js
• Web server framework: Express.js
• Database: Postgres
• Database hosting: Neon or Supabase (Supabase if the DB is mostly auth, otherwise Neon)
• ORM: Drizzle
• Frontend framework: React
• Style framework: Tailwind CSS