---
title: "Share resources across branches"
section: "deploy-and-host/fullstack-branching"
platforms: ["android", "angular", "flutter", "javascript", "nextjs", "react", "react-native", "swift", "vue"]
gen: 2
last-updated: "2024-07-08T18:10:40.000Z"
url: "https://docs.amplify.aws/react/deploy-and-host/fullstack-branching/share-resources/"
---

In some instances, you may not want to deploy new resources for every branch. For example, you might want all your `feature` branches to point to the backend resources deployed by the `dev` branch so you can reuse seed data, users, and groups.

![Main and dev environments, each with their own backend resources. In the dev environment, two feature branches are shown sharing the same backend resources. ](/images/gen2/fullstack-branching/share-resources.png)

You can update your app build settings to share resources across branches. From the Amplify console, go to your **App overview** page, select **Build settings** under the **Hosting** for viewing your app's build specification YAML file.

![The build specification YAML file on the Build settings page in Amplify console.](/images/gen2/fullstack-branching/build-settings.png)

Update the build settings for the `backend` phase to run `npx ampx generate outputs --branch dev app-id $AWS_APP_ID` to generate the `amplify_outputs.json` file for all branches other than `main` or `dev`. After this update, any new deployed branches will not deploy backend resources as part of the build and instead will use the deployed backend resources from the `dev` branch.
Update the build settings for the `backend` phase to run `npx ampx generate outputs --branch dev app-id $AWS_APP_ID` to generate the `amplify_outputs.json` file for all branches other than `main` or `dev`. After this update, any new deployed branches will not deploy backend resources as part of the build and instead will use the deployed backend resources from the `dev` branch.

```yaml title="amplify.yml"
version: 1
backend:
    phases:
        build:
            commands:
                - 'npm ci --cache .npm --prefer-offline'
                - 'echo $AWS_BRANCH'
                - |
                  case "${AWS_BRANCH}" in
                      main)
                          echo "Deploying main branch..."
                          npx ampx pipeline-deploy --branch $AWS_BRANCH --app-id $AWS_APP_ID
                          ;;
                      dev)
                          echo "Deploying dev branch..."
                          npx ampx pipeline-deploy --branch $AWS_BRANCH --app-id $AWS_APP_ID
                          ;;
                      pr-*)
                          echo "Deploying pull request branch..."
                          npx ampx generate outputs --branch previews --app-id $AWS_APP_ID
                          ;;
                      *)
                          echo "Deploying to staging branch..."
                          npx ampx generate outputs --branch dev --app-id $AWS_APP_ID
                          ;;
                  esac
frontend:
    phases:
        build:
            commands:
                - 'npm run build'
    artifacts:
        baseDirectory: .next
        files:
            - '**/*'
    cache:
        paths:
            - .next/cache/**/*
            - .npm/**/*
            - node_modules/**/*
```