Deployment slots are a feature of Azure that allow you to create multiple deployment slots for a single instance of an app or service. You can use these slots to scale your app or service up or down as needed.
A deployment slot is a small, isolated instance of an app or service that runs on Azure. You can use a deployment slot to test an app or service before you deploy it to a larger instance.
You can also use a deployment slot to run a small number of instances of an app or service in parallel.
You create a deployment slot by using the Azure portal. When you create a deployment slot, you specify the size and type of instance that the slot will use.
You can also specify how many instances of the app or service the slot will host.
To use a deployment slot, you first deploy the app or service to an instance that is in one of your other deployment slots. Then, you create the deployment slot and deploy the app or service to it.
The app or service runs in the same environment as the other apps and services in your Azure subscription.
You can delete a deployment slot by using the Azure portal. When you delete a deployment slot, it removes the instance of the app or service that is currently running in it, and any new instances that are created for the app or service are automatically deployed to another one of your deployed slots instead.
A deployment slot is useful if you want to test an app or service before you deploy it to a larger instance, run a small number of instances of an app or service in parallel, or experiment with different configuration options for an app or service before you deploy it to production.
