It’s likely failing because the F1 free tier doesn’t have enough resources or because dependencies aren’t being installed properly during deployment. check the deployment logs in Azure to confirm if packages are missing or if the app times out while starting. Make sure your backend binds to the correct port (usually provided by Azure) and try enabling detailed logging to see the actual error. If everything looks fine locally but still fails on Azure, the app may simply need more memory... upgrading to a basic plan often fixes this.