Software as a service (SaaS) is a software distribution model that involves the use of third-party providers in hosting applications. These applications are made available to customers over the Internet. Along with infrastructure as a service (IaaS) and platform as a service (PaaS), SaaS forms the main three categories of cloud computing. David Reid, Co-founder & CEO at EaseCentral, claims, “Year over year, we consistently see a vast amount of technological advancements, which are having an increasingly large impact on the HR and benefits industry.” 

Discuss some key benefits of cloud-based HR solutions. What are the current trends in terms of cloud computing (SaaS, PaaS, IaaS) solutions?