![]() The ability to scale up during periods of high demand and high-quality security are essential in today’s 24-7 retail industry. Ecommerce: IaaS is an excellent option for online retailers that frequently see spikes in traffic.Disaster recovery: Instead of setting up redundant servers in multiple locations, IaaS can deploy its disaster recovery solution to the cloud provider's existing geographically-dispersed infrastructure.Comprehensive security: With a high-level of security on-site, at data centers, and via encryption, organizations can often take advantage of more advanced security and protection they could provide if they hosted the cloud infrastructure in-house.įaster access to best-of-breed technology: Cloud providers compete with each other by providing the latest technologies to their users, IaaS customers can take advantage of these technologies much earlier (and at far less cost) than they can implement them on premises.Improved responsiveness: Customers can provision resources in a matter of minutes, test new ideas quickly and quickly roll out new ideas to more users.Lower latency, improved performance: Because IaaS providers typically operate data centers in multiple geographies, IaaS customers can locate apps and services closer to users to minimize latency and maximize performance.Higher availability: With IaaS a company can create redundant servers easily, and even create them in other geographies to ensure availability during local power outages or physical disasters.It also eliminates the constant trade-off between the waste of purchasing excess on-premises capacity to accommodate spikes, versus the poor performance or outages that can result from not having enough capacity for unanticipated traffic bursts or growth. IaaS can be thought of as the original 'as a service' offering: Every major cloud service provider - Amazon Web Services, Google Cloud, IBM Cloud, Microsoft Azure - began by offering some form of IaaS.Ĭompared to traditional IT, IaaS gives customers more flexibility build out computing resources as needed, and to scale them up or down in response to spikes or slow-downs in traffic. IaaS lets customers avoid the up-front expense and overhead of purchasing and maintaining its own on-premises data center. Customers can provision, configure and operate the servers and infrastructure resources via a graphical dashboard, or programmatically through application programming interfaces (APIs). Typically IaaS customers can choose between virtual machines (VMs) hosted on shared physical hardware (the cloud service provider manages virtualization) or bare metal servers on dedicated (unshared) physical hardware. The difference is that the cloud service provider hosts, manages and maintains the hardware and computing resources in its own data centers. IaaS customers use the hardware via an internet connection, and pay for that use on a subscription or pay-as-you-go basis. IaaS is on-demand access to cloud-hosted computing infrastructure - servers, storage capacity and networking resources - that customers can provision, configure and use in much the same way as they use on-premises hardware. But there are additional advantages specific to each of these solutions. So the chief advantage of IaaS, PaaS, SaaS or any 'as a service' solution is economic: A customer can access and scale the IT capabilities it needs for a predictable cost, without the expense and overhead of purchasing and maintaining everything in its own data center. In cloud computing, the cloud service provider owns, manages and maintains the assets the customer consumes them via an Internet connection, and pays for them on a subscription or pay-as-you-go basis. In traditional IT, an organization consumes IT assets - hardware, system software, development tools, applications - by purchasing them, installing them, managing them and maintaining them in its own on-premises data center. 'As a service' refers to the way IT assets are consumed in these offerings - and to the essential difference between cloud computing and traditional IT. Many mid-sized businesses use more than one, and most large enterprises use all three. IaaS, PaaS and SaaS are not mutually exclusive. SaaS, or software as a service, is on-demand access to ready-to-use, cloud-hosted application software.PaaS, or platform as a service, is on-demand access to a complete, ready-to-use, cloud-hosted platform for developing, running, maintaining and managing applications.IaaS, or infrastructure as a service, is on-demand access to cloud-hosted physical and virtual servers, storage and networking - the backend IT infrastructure for running applications and workloads in the cloud.They are sometimes referred to as cloud service models or cloud computing service models. IaaS, PaaS and SaaS are the three most popular types of cloud service offerings.
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