You will host a publicly accessible portal web app on Azure for the Miami branch to retrieve customer and product information. The app is currently in an on-premises test environment. The web tier plan must meet these requirements: use the miami.weyland.com URL, deploy to two instances, include SSL support, provide 12 GB storage, and minimize cost. Which web tier plan should you use?

The Standard tier is the correct choice because it supports custom domains (miami.weyland.com), SSL, and allows for scaling out to multiple instances (two instances required). It also provides 50 GB of storage, exceeding the 12 GB requirement, and offers a balance of features and cost-effectiveness. The Basic tier supports custom domains and SSL but does not allow for scaling out to multiple instances. The Free and Shared tiers do not support custom domains or SSL, and have very limited resources, making them unsuitable for a production-grade, publicly accessible portal.