  Cloud computing is a Technology that has come out in the last decade and that
is transforming the IT industry in huge. The Cloud computing is playing a vital
role as a backbone component of the Internet of Things (IoT). In a Cloud
Computing scenario, cloud services are accessible via Internet. Cloud computing
is providing ondemand resources like Infrastructure, platform, and software as
it is do not pay to possess the software itself but rather to use it. Pay for
use concept is very attractive, hence many organizations are adopting the SaaS
model drastically. Even though, each customer is unique and leads to unique
variation in the requirements of the software. the SaaS is generally press into
service and it yields advantages to service providers and service customers.
More and more SaaS services are emerging, how to select qualified service is
key problem for customers. Present quality models are not sufficient to
evaluate SaaS selection on the cloud due to its tremendous increasing in the
use. A quality model can be used to represent, evaluate, and differentiate the
quality of the SaaS providers. In this paper, a new quality model proposed and
named SAASQUAL for cloud software services.This model is based on different
attributes of quality software, quality service and metrics that measure
software quality and service quality in order to evaluate potential software as
a service on the cloud.
