Review of cloud migration strategies and providers – an IaaS migration strategy

Abstract

Companies are addressing the Cloud Computing issue more actively recently, as a part of a move towards a more agile and flexible IT infrastructure since benefitting from an IT infrastructure that is flexible, scalable, high-performance and up-to-date is no longer a luxury or the exception to a rule. The issue they address is “Which is the best strategy?” Of course, this is not a simple issue given that the cloud can impact an organization’s application picture across several dimensions. When an organizations made the decision to consider cloud services for its application or infrastructure deployment, it’s important to understand the fundamental differences between the core categories of cloud services available since IT leaders and enterprise architects should prepare an overarching cloud strategy. The cloud is a very broad concept covering different types of online services, but when referring to cloud procurement, usually there are three models to be taken into the consideration, such as Software as a Service (SaaS), Platform as a Service (PaaS), and Infrastructure as a Service (IaaS). Another thing that needs to be addressed is choosing the provider of the cloud platform as service. To do that the organization needs to anticipate the storage, apps they use, performances they need, price, flexibility, etc. Through this review study research we’re going to present shortly SaaS and PaaS as cloud service models and will describe in more details a possible migration IaaS strategy.