How Do I Move My App Between Hosting Platforms?
You deployed your app to one platform and now you want to move it. Maybe Render's free tier is putting your app to sleep too often and you want to try Railway…
You deployed your app to one platform and now you want to move it. Maybe Render’s free tier is putting your app to sleep too often and you want to try Railway. Maybe Vercel is not supporting your specific setup. Maybe you found a better option. Moving an app between hosting platforms sounds daunting but follows a predictable sequence that Claude, ChatGPT, or your AI tool of choice can help you through. Here is exactly how to do it without losing data or having downtime.
Why People Move Hosting Platforms
The most common reasons to migrate:
- The current platform is too expensive or limits are too restrictive
- The platform does not support a specific feature you need
- Cold starts are hurting your user experience
- You want better geographic coverage for your users
- Your app has grown beyond what the current platform handles well
What You Need Before You Migrate
Before touching anything, take stock of what your app depends on:
Your code. Is it on GitHub? If yes, moving to a new platform is mostly just connecting the new platform to your existing repository. If not, make sure it is on GitHub before you start.
Your environment variables. List every environment variable your app uses. You will need to add all of them to the new platform. Check your current platform’s environment variables section and copy them all down somewhere safe (not a public document).
Your database. Is your database on the same platform (like a Render PostgreSQL database) or an external service (like Supabase or PlanetScale)? If it is on the same platform, you need to migrate the database too. If it is external, the database just needs to stay as-is and the new platform connects to it.
Your domain. If you have a custom domain, you will need to update DNS to point to the new platform.
The Migration Sequence
Step 1: Set up the new platform. Create an account on the new hosting platform, connect your GitHub repository, add all your environment variables, and deploy. At this point your app is running on both the old and new platform simultaneously.
Step 2: Test thoroughly on the new platform. Use the new platform’s generated URL (like yourapp.railway.app) to test every feature of your app before switching your domain. Do not switch your domain until you are confident everything works.
Step 3: Migrate the database if needed. If your database is on the old platform, this is the most delicate step. Ask your AI: “I need to migrate my PostgreSQL database from [old platform] to [new platform]. Can you help me export the data from the old database and import it into the new one with minimal downtime?”
Step 4: Switch your domain. Once you are confident the new platform works correctly, update your DNS to point to the new platform. We covered this in the custom domain post. DNS propagation takes minutes to hours.
Step 5: Verify and keep the old deployment temporarily. After switching your domain, keep your old deployment running for a day or two. If anything goes wrong, you can switch the domain back while you fix it.
Platform-Specific Migration Notes
From Vercel to Railway/Render: straightforward if your database is external. Connect your repo to Railway or Render, add environment variables, deploy, switch domain.
From Render to Railway (or vice versa): if you have a Render or Railway database, you need to export the data. Ask your AI to help you use pg_dump (for PostgreSQL) to export and pg_restore to import.
From Replit to anything: Replit apps often require restructuring because Replit handles a lot of configuration automatically that you will need to set up explicitly on other platforms. Ask your AI: “I want to move my app from Replit to [target platform]. What changes does my code need to deploy correctly on the new platform?”
The One Thing to Remember
Migrating between hosting platforms follows the same sequence: document your environment variables, deploy to the new platform using your existing GitHub repository, test thoroughly on the new URL, migrate your database if it is on the old platform, then switch your domain. Keep the old deployment running briefly so you can roll back if needed.
Running on Snapdock means switching is a configuration change, not a migration. → Snapdock
New here? These might help: Hosting vs deploying. What is the difference? → How do I back up my app and data? →