IaaS means that companies use servers, storage, network and the other elements of the data center infrastructure as abstract, virtualized services via the Internet. The IaaS services provided are charged dependent on use. Nevertheless, users continue to control the operating system and applications. The IaaS model permits flexible adjustments (meaning more or less) in the scope of infrastructural use – via the Azure Portal – to meet current requirements.
IaaS products generally provide computing, storage and network infrastructure (firewalls, load balancers etc.). The services are typically delivered as virtual machines whose contents are controlled by the user. Therefore, IaaS displays similarities to traditional hosting: Enterprises use the host environment as a logical expansion of the in-house data center, but are required to maintain the corresponding servers in the same way as the ones installed in the company.