Cloud computing refers to the delivery of computing services—including servers, storage, databases, networking, software, and more—over the internet ("the cloud") to offer faster innovation, flexible resources, and economies of scale. Rather than owning and maintaining physical data centers and servers, cloud computing allows individuals and organizations to access computing resources on a pay-as-you-go basis, scaling up or down as needed.
Characteristics of Cloud Computing :
1) On demand self service.
2) Broad network access.
3) Multi-tenancy and resource pooling.
4) Rapid elasticity and scalability
5) Measured Service.
There are different types of cloud computing services:
Infrastructure as a Service (IaaS): Offers virtualized computing resources over the internet, providing virtual machines, storage, and networking.
Platform as a Service (PaaS): Provides a platform allowing customers to develop, run, and manage applications without dealing with infrastructure management.
Software as a Service (SaaS): Delivers software applications over the internet on a subscription basis, eliminating the need for users to install and maintain software locally.
Advantages of Cloud Computing:
1) Shift from CAPEX to OPEX.
2) Cloud computing allows resources to be scaled up or down based on demand. This means that organizations can easily adjust their computing resources to accommodate changes in workload without having to invest in and manage physical infrastructure.
3) Cloud computing follows a pay-as-you-go model, where users only pay for the resources they consume. This eliminates the need for large upfront investments in hardware and allows organizations to optimize their spending based on actual usage.
4) Increased speed and agility.
5) Stop spending money running & maintaining data centers.
6) Go global in minutes.
Problems solved by the Cloud :
1)Flexibility 2)Cost effectiveness 3)Scalability 4)Elasticity 5) High-availability & Fault Tolerance 6) Agility
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