Objective :
> What is Cloud Computing ?
> What are the different types of Cloud Deployment models?
> What is a data center?
> How did Cloud Computing come into existence?
> What are the different types of Cloud Service Models?
> Important concepts related to Cloud.
> Different Cloud Providers
> Benefits of Cloud Computing over traditional methods.
Things to learn :
> Cloud Computing, its key concepts, and benefits.
> To decide when to use Cloud Computing.
> Which models and services you should employ.
What is cloud computing?
> Cloud computing is an on demand delivery of compute, storage, database, networking, and many more services over the internet.
> On demand delivery means you get it when you need it.
> It comes with pay as you go pricing.
What are the different cloud computing services?
1 Compute :
> Compute is the processing power of your machine.
2 Storage :
> Storage enables you to save data within a data storage service.
> You can store data such as videos, music, documents, pictures, etc.
> Data saved on a storage device will remain permanently until you delete it.
> To store data either temporarily or permanently on the cloud , you user cloud storage.
3 Database :
> When you arrange your data or information in certain rows and columns, it is called structured data.
> To store a huge amount of structured data, you need a special type of storage called databases.
> MySQL, Oracle , and SQL Server.
> To store structured data in the cloud, you use a database.
4 Networking : It is a service that provides connectivity among different services.
> Different organizations have different requirements, they want different levels of control on their cloud infrastructure.
> Each cloud deployment model offers a different level of management, security, and cost.
Note : Attributes of cloud deployment model
> Where is Cloud infrastructures located?
> Who controls it?
> Who can access and use it?
Three types of Cloud Deployment Models :
A) Public Cloud :
> A public cloud is a cloud computing infrastructure maintained and operated by a cloud service provider.
> Anyone can use the public cloud.
> The cloud service providers are responsible for maintaining the physical infrastructure.
Example : Google Cloud, AWS, Microsoft
B) Private Cloud :
> A private cloud is a cloud computing infrastructure that is specifically provisioned for a company.
> Cloud services are available to an organization and its users only.
> The physical infrastructure can be maintained either by the organization itself or by the third party who is providing the cloud services.
> When a cloud computing infrastructure is available for a certain organization and to their internal people only, this is called Private Cloud.
> Private cloud are more expensive than public clouds.
> Private clouds are used by organizations that want to run their mission-critical applications due to security reasons.
C) Hybrid Cloud :
> Hybrid means the combination of two or more.
> A hybrid cloud is a cloud computing infrastructures that benefits from both Public and Private models and enables organizations to use both.
> Hybrid cloud combines a public cloud and a private cloud to allow data and applications to be shared between them.
What is Data Center ?
> A data center is a physical space where organizations keep computer systems and related hardware that are required for their websites, apps, or IT infrastructure.
> We can add more systems and hardware based on the growth.
** Cost :
> Setting up a data center needs a huge upfront investment in building,
hardware, cooling, power, ventilation equipment, etc.
hardware, cooling, power, ventilation equipment, etc.
> Data center maintenance cost.
** Capacity Planning :
> Data centers should always be ready to meet the demand.
> Most of the time we end up over-provisioning the servers, which leads to a waste of our resources.
** Staffing and technical skill sets :
>To monitor the data centers and troubleshoot them during any issue, we need skilled staff which further leads to additional costs.
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