You administer an Azure Web Site named contoso. The development team has implemented
changes to the website that need to be validated. You need to validate and deploy the changes
with minimum downtime to users. What should you do first?

A.
Create a new Linked Resource.

B.
Configure Remote Debugging on contoso.

C.
Create a new website named contosoStaging.

D.
Create a deployment slot named contosoStaging.

E.
Back up the contoso website to a deployment slot.

Explanation:
When you deploy your application to Azure Websites, you can deploy to a separate deployment
slot instead of the default production slot, which are actually live sites with their own hostnames.
Furthermore, you can swap the sites and site configurations between two deployment slots,
including the production slot. Deploying your application to a deployment slot has the following
benefits:
* You can validate website changes in a staging deployment slot before swapping it with the
production slot.
* After a swap, the slot with previously staged site now has the previous production site. If the
changes swapped into the production slot are not as you expected, you can perform the same
swap immediately to get your “last known good site” back.
* Deploying a site to a slot first and swapping it into production ensures that all instances of the slot
are warmed up before being swapped into production. This eliminates downtime when you deploy
your site. The traffic redirection is seamless, and no requests are dropped as a result of swap
operations.