A discussion of the Microsoft Platform (Windows, IIS, SQL Server and ASP.NET) vs LAMP (Linux, Apache, MySQL, and PHP) topic covers a large set of topics.
My intent is not to compare 1:1 but commenting on a scenario.
In many discussions, I realized many people have perception/misconceptions that, Azure is not really meant for traditional web-based applications built on the LAMP (Linux Apache MySQL PHP).
However, the truth is that you can deploy LAMP stack on Azure to rapidly build, deploy, and dynamically scale websites and web apps using IaaS (VM scale sets) and PaaS (Azure Web Apps)
Providers like, Bitnami provides images which are pre-configured, tested and optimized for Microsoft Azure and portable across platforms. Which provides quick and ready to use services.
For more information please feel free to visit @ https://azure.microsoft.com/en-in/overview/choose-azure-opensource/