Deploying your app created in ArcGIS Instant Apps is relatively east and can be completed in a few simple steps:
Log into ArcGIS Online
The first step in deploying your app is to log into your ArcGIS Online account. This can be done by visiting the ArcGIS Online website.
Create a new app
You can create a new app by clicking Create new app > Instant Apps from the main dashboard. This will take you to the Instant Apps builder interface, where you can choose from a variety of templates and configure the application to meet your specific needs.
Customize your app
After selecting a template, you can customize the application by adding your own data, configuring the layout, and adjusting other settings such as symbology and labeling.
Test and publish your app
Once you have configured your app, you can test your app by previewing it to see how it will look and function when deployed. This will allow you to identify any issues or make additional changes before the application is deployed.
Once your testing is complete, you can publish or deploy your app by clicking Publish in the configuration window in the Instant App builder panel.
Share your app
Now that your app is published, you will need to share your app publicly. This will make your app available to users via a web link, which can be shared or embedded in other websites or applications. If your app contains any data that requires additional configuration, like data from ArcGIS Living Atlas, you will need to configure your app to allow users to access that data.