Last updated: December 29, 2018
The Best IaaS Hosting: Who’s The Best For Your Site? [Updated: 2019]
What is IaaS?
Looking at cloud computing from a hosting perspective, we can conclude that cloud hosting is usually available in three basic service models, or layers: Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (SaaS).
IaaS (Infrastructure as a service) is a cloud computing service model that provides access to virtualized computing resources (infrastructure) over the internet. In the IaaS service model, a provider hosts the computing hardware such as servers, virtual machines, storage, network connections, bandwidth, IP addresses and load balancers, providing the client easy access to the virtualized resources.
IaaS providers usually offer additional services such as a virtual machine disk image library, firewalls, virtual local area networks (VLANs) and software packages. IaaS environments include dynamic scaling features, desktop virtualization, policy-based services and automation of administrative tasks. Users install the operating system and their applications on the virtual infrastructure and keep their software updated and maintained without worrying about the computing hardware.
What Are the Key Benefits of IaaS?
Removing the planning, purchase and management of IT infrastructure from the client’s to-do list is the main advantage of the IaaS service model. Since the underlying physical hardware is set up and maintained by the IaaS provider, users do not invest in hardware. Building your own datacenter is complex and expensive, and on top of that you would need a skilled tech team to manage it.
IaaS virtual resources are also dynamically scalable, so they can meet different needs. This makes IaaS well-suited for workloads that are seasonal, experimental or change unexpectedly. There is practically no delay in expanding capacity or adding resources. IaaS services are billed on a utility computing basis: The cost of the service reflects the amount of the allocated and used resources. Using IaaS you can create cost effective and easily scalable IT solutions without the expense of purchasing and managing the hardware infrastructure yourself. With IaaS, expanding businesses can scale their infrastructure according to their growth, which is a good selling point for high-growth businesses and ambitious startups.
Services provided by the IaaS provider benefit from physical security of the provider’s data centers. IaaS services can usually be accessed from any location with an internet connection, so you are not bound to a server location.
Traditional enterprise IT infrastructure requires a lot of investment in redundancy and failover equipment to increase service availability time. IaaS relies on vast data centers and huge hardware resources of the cloud provider’s infrastructure to provide service availability.