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An Intro to Cloud Computing

Cloud computing is the delivery of computing services, like servers, storage, databases, networking, and such—over the Internet to provide faster innovation, flexible resources, and economies of scale. You typically pay only for cloud services you use, helping you lower your operating costs, run your infrastructure more efficiently, and scale as your business needs change.


In this lecture on Cloud Computing, it’s explained that cloud computing is the delivery of various computing services, such as servers, storage, databases, networking, and more, over the internet. This model allows for rapid innovation, flexible resources, and significant economies of scale. The cost-effectiveness is a key advantage; you only pay for what you use, which helps to reduce operating costs, increase efficiency, and scale as business needs evolve.

The lecture emphasizes that cloud computing represents a departure from traditional IT approaches, with benefits including cost savings, enhanced scalability, improved productivity, better performance, reliability, and security. It removes the upfront capital expenditure of setting up and maintaining on-site data centers, which requires a hefty investment in physical hardware, electricity, and cooling systems.

One of the most compelling features of cloud services is their on-demand nature, which allows vast resources to be provisioned quickly, often within minutes, and with just a few clicks. This gives businesses unprecedented flexibility and capacity planning.

Scalability in the cloud is elastic, which means IT resources can be precisely scaled up or down based on demand, and often from the most suitable geographic location.

The lecture points out that cloud computing also relieves IT teams from many time-consuming management tasks, such as hardware setup and software patching, enabling them to focus more on achieving business objectives.

Major cloud services run on a network of secure data centers that are continually updated with the latest and most efficient computing hardware. This approach ensures superior performance, with reduced network latency and more significant economies of scale.

Additionally, cloud computing simplifies and reduces the cost of backup, disaster recovery, and business continuity strategies by enabling data mirroring across multiple redundant sites on the provider’s network.

The lecture highlights that cloud providers offer robust security measures that enhance an organization’s security posture, helping to protect data, applications, and infrastructure against threats.

In closing, the lecture provides an exam tip reminding students that cloud computing is about delivering computing services over the internet to innovate faster, utilize flexible resources, and enjoy economies of scale. Remembering the payment model based on actual service consumption and the key benefits of cloud computing is crucial for any related exam questions.

Knowledge Check

Question 1:

Cloud computing eliminates the ___________ of buying hardware and software and setting up and running on-site datacenters, including racks of servers, round-the-clock electricity for power and cooling, and the IT experts for managing the infrastructure.

    1. capital expense
    2. operational expense
    3. pay-as-you-go expense
    4. shared responsibility

Question 2:

The benefits of cloud computing services include the ability to scale _________. In cloud speak, that means delivering the right amount of IT resources (i.e., computing power, storage, bandwidth) right when they’re needed, and from the right geographic location.

    1. elastically
    2. vertically
    3. horizontally
    4. None of the choices is correct

Question 3:

__________ is the delivery of computing services over the Internet to provide faster innovation, flexible resources, and economies of scale. You typically pay only for cloud services you use.

    1. Cloud computing
    2. SaaS-only
    3. PaaS-only
    4. IaaS-only

Correct answers with complete explanations are available in my collection of 150+ practice questions that are available here.

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