When determining the appropriate setup and configuration of your business technology infrastructure, many factors contribute to the considerations, such as the size of your company, the location of your employees, anticipated growth and of course, budget.
Infrastructure as a Service (IaaS)
Infrastructure-as-a-Service, (IaaS), provides the greatest degree of flexibility and permits holistic services for any business size, including networking, authentication services, application hosting, security, data / file storage and management control over your IT resources. It can scale as your business does, but a managed service provider is recommended to ensure the configuration is properly secure and appropriate for your business needs.
Platform as a Service (PaaS)
Platform as a Service removes the need to manage the underlying infrastructure (usually hardware and operating systems) to permit deployment control and management of applications. Many development teams find this solution very helpful and efficient since it removes any need to worry about resource procurement, capacity planning, software maintenance, patching, or any of the other infrastructure maintenance involved with operating an application suite.
Software as a Service (SaaS)
Software-as-a-Service provides a completed product that is run and managed by the service provider. In most cases, Software-as-a-Service refers to end-user applications. A good example of a SaaS product is Salesforce. With a SaaS offering you do not have to think about how the service is maintained or how the underlying infrastructure is managed; you only need to think about how you and your team will use the particular piece of software. SaaS applications are becoming more and more popular since they relieve a business from worry about maintenance of hardware, scalability and ubiquitous access.