A medium-sized enterprise requires a new cloud-based solution to enhance team collaboration. They are looking for a service that includes shared document editing, project management tools, and real-time messaging. The service also needs to provide seamless integration with their existing cloud-based email system. Which of the following subscription services would BEST meet these requirements?
Virtual desktop infrastructure (VDI)
Platform as a Service (PaaS)
Infrastructure as a Service (IaaS)
SaaS for collaboration