Question SY0-501

[Elina]

Which of the following BEST explains the difference between SaaS. PaaS, and laaS?

A. SaaS solutions offer users a complete computing solution that encompasses the software and underlying infrastructure, while the other cloud approaches offer a partial computing solution.

B. laaS solutions provide users with the interfaces for accessing software applications hosted on a remote platform, while the other cloud approaches require users to develop their own applications.

C. PaaS solutions provide users with ready-made application products that do not require any additional development, while the other cloud approaches require software development before they are useful.

D. SaaS provides a common set of services but not the application products; while PaaS provides the application products but not the common services, and laaS provides Internet connectivity for the customer.

 

[Stephen P]

IaaS is infrastructure, so it is basically just the servers. The cloud provider will maintain those servers, but everything else is up to the customer.

PaaS is platform, and will have operating systems on the servers and something along the lines of development platforms. On CompTIA exams, keep DevOps in mind for PaaS.

SaaS is software, the highest of all levels. The cloud provider does everything except account creation and maintenance. Hardware (infrastructure), operating systems (platform), and applications (software) are all maintained by the provider. This requires the least effort on the part of the customer.

Please let me know if you need anything else!

 

[Elina]

Thank you Stephen