In this guide, you will learn how to create a Development workspace to start developing in an IO environment.

When working in a Development workspace, the public version of your store, that is, the one that is visible to end users, will stay stable utilizing the CMS Legacy until you are ready to transition to IO.

1. Install the VTEX IO Command-line Interface (CLI). Through the CLI, you can log in to your VTEX account, manage workspaces and develop new apps.

2. Ensure that you understand the concepts of VTEX IO and workspaces.

1. Using your terminal and the VTEX IO CLI, log into your VTEX account by running the following command:

Remember to replace the value between the brackets for the VTEX account name you desire. For example: vtex login account-name.

2. Create a new Development workspace.

3. Open a ticket to the VTEX support team requesting the installation of the vtex.edition-store@3.x Edition app in the new Development workspace.

The vtex.edition-store@3.x Edition app is responsible for enabling building elements for the frontend using the VTEX Store Framework. You can only configure and test the solution successfully after installing it.

Once the vtex.edition-store@3.x Edition app is installed in the Development workspace, configure the Store Framework theme you want in the Store Theme app and test it in the new Development workspace. Refer to the Setting your store's theme documentation for more details.

1. Make sure to configure the Store theme for the Development workspace you have created. Refer to the Setting your store's theme documentation for more details.

2. After finishing setting your Store Theme, perform A/B testing between the Development workspace in IO and the Master workspace in the CMS legacy. Refer to the Performing A/B testing between store versions in CMS and VTEX IO guide.