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Question 5

You plan to migrate a web application to Azure. The web application is accessed by external users.

You need to recommend a cloud deployment solution to minimize the amount of administrative effort used to manage the web application.

What should you include in the recommendation?





IaaS (Information as a Service). IaaS is the most basic level of cloud-based solutions, which refers to renting an IT infrastructure as a fully outsourced service. In this category, the cloud provider lets you rent servers, VMs, storage, network and operating systems on a pay-as-you-go basis.

Examples: Amazon EC2 and S3, Google Compute Engine, Windows Azure.

PaaS (Platform as a Service). PaaS is the cloud solution where, apart from providing an infrastructure, cloud providers also issue an on-demand computing environment to develop, test, run and collaborate with components such as web servers, database management systems, and software development kits (SDKs) for various programming languages.

Examples: AWS Elastic Beanstalk, Heroku, Windows Azure, Force.com, Google App Engine.

SaaS (Software as a Service). SaaS providers offer fully functional web-based application softwares tailored to a variety of business needs such as project tracking, web conferencing, marketing automation or business analytics.

Examples: Google Apps, Microsoft Office 365, Gmail, Yahoo and Facebook.



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