An empirical study has been conducted to test the proposed hypotheses focused on Spanish companies that consider Saa S to be a strategic technology for the execution of their activities.
The remainder of the paper is structured as follows: first, a review is conducted of the prior literature that begins with an analysis of some especially widespread technology acceptance models and then more specifically focuses on papers that are cloud computing-related.
Cloud computing has attracted a lot of attention in both business and academic spheres in recent times.
This is a service- and applications-related technology run in a distributed network that uses virtual resources and is accessible through networking and Internet standards .
The last model provides centralized configuration and hosting as well as automatic updates , releasing users from installing and maintaining software and simply allowing them access via the Internet [4, 5].
The following stand out among the benefits for businesses that are regularly attributed to cloud computing: the reduction in software and hardware resource costs and access to services from anywhere in the world [6, 7]; the noncomplex use of cloud-based solutions , a scalable  market-oriented  architecture; the potential to transform business processes ; its potential to provide better knowledge management and a tighter link between information systems and management requirements  and even its ability to provide competitive advantages, given the reductions in capital outlay and IT-related operating and maintenance costs that enable resources to be redirected toward core business activities .Numerous studies can be found in the literature that address the use of cloud systems in such companies, ranging from technical issues, such as infrastructure security through proposed new architectures and methods [20–25], efficient data management [26–28], performance and quality of service measurement criteria [9, 29, 30], and the issues surrounding interoperability standards and difficulties for their integration and customization [31–33].In other cases, the backbone of research deals with problems more related to business management issues, such as cloud computing-associated opportunities, costs and risks [34–37], and the importance of trust and data privacy [38–44].Software-as-a-Service (Saa S) is a type of cloud service which provides software functionality through Internet.Its benefits are well received in academia and industry. The present study empirically analyzes the factors that determine the adoption of cloud computing (Saa S model) in firms where this strategy is considered strategic for executing their activity. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Said bibliographical review provides the theoretical foundations for the proposed hypotheses and the eventual proposal for a research model to be formulated.Subsequently, the empirical study methodology used to test the various hypotheses is described and the obtained results are presented.Also, the attitudes of others toward a particular technology often influence a person’s intention to use the same technology.Ajzen  subsequently developed the Theory of Planned Behavior (TPB), adding to the TRA model the beliefs of control and perceived ease of use and behavior control.