These days, more and more businesses are leveraging IaaS, PaaS, and SaaS cloud-based infrastructures. Cloud Hosting services provide the ability to add new resources such as capacity, storage, and bandwidth quickly and at substantial savings over existing models. This quick and secure deployment allows businesses to rapidly adapt to changes in the market and try out a new application without first investing in hardware, software, and networking.
Key characteristics of cloud computing are:
Cloud Hosting Rapid Elasticity and Scalability:
The cloud application can be scaled down as well as up to accommodate your needs. This inherent flexibility and the savings that result from it make cloud services very attractive to the end user.
On-Demand Provisioning and Automatic Deprovisioning:
The customer can request an amount of computing, storage, and software from the service provider. After these resources are consumed, they can be automatically deprovisioned.
Application Programming Interfaces (APIs):
Cloud services have standardized APIs that provide seamless communication between two applications or data sources, such as CRM and financial management systems, without the need of custom programming.
The usage of computing power, storage, and bandwidth is metered and billed accordingly.
Cloud hosting is provided on multiple connected servers to provide uninterrupted connectivity in the case of one server failure or a huge spike in traffic.
Infrastructure as a Service (IaaS)
IaaS delivers computer hardware (servers, networking technology, and storage and data center space) as a service. This can also include operating systems and virtualization technology. The main benefits of outsourcing infrastructure are:
Running an in-house web server has many cost factors, such as the initial purchase, networking, internet connections, server management, and deployment of other IT resources. All these costs can be eliminated for one cheaper fee by an expert cloud service provider.
IaaS Aggregation of Resources:
Aggregate server and networking resources are provided to handle spikes in traffic.
New resources such as storage, servers, and network bandwidth are made available faster because cloud providers aggregate homogenous resources across a large number of customers.
A cloud service provider offers adequate security to mitigate security threats.
Platform as a Service (PaaS)
PaaS usually has multi-tenancy architecture that allows multiple users to run data and applications simultaneously through virtualization. This model allows developers to build web applications without having to install any software or tools on their own computer, and they can deploy those applications directly. Platform as a Service (PaaS) includes browser-based development studios and the ability to scale.
Software as a Service (SaaS)
SaaS refers to business applications that are hosted by the provider and delivered as a service such as CRM. Instead of having to install a program on their machine, users are able to run the application through a web browser. Software as a Service (SaaS) is sometimes called web-based software, on-demand software, or hosted software.