Cloud Computing

Cloud computing

is the on-demand delivery of compute power, database, storage, applications, and other Iresources via the internetwith pay-as-you-go pricing.

Infrastructure as software

Cloud computing enables you to stop thinking of your infrastructure as hardware, and instead think of (and use) it as software.

Traditional computing model

infrastructure is thought of as hardware. Hardware solutions

are physical, which means they require space, staff, physical security, planning, and capital

expenditure.

Cloud computing model

enables you to think of your infrastructure as software. Software solutions are flexible.

Infrastructure as a service (IaaS)

Services in this category are the basic building blocks for

cloud IT and typically provide you with access to networking features, computers (virtual or on

dedicated hardware), and data storage space.

Platform as a service (PaaS)

Services in this category reduce the need for you to manage the

underlying infrastructure (usually hardware and operating systems) and enable you to focus on

the deployment and management of your applications.

Software as a service (SaaS)

Services in this category provide you with a completed product

that the service provider runs and manages. In most cases, software as a service refers to end

-user applications.

• Cloud

• Hybrid

• On-premises

Cloud computing deployment models

Cloud

fully deployed in the cloud, and all parts of the application run in the cloud

Hybrid:

a way to connect infrastructure and applications between cloud-based resources and existing resources that are not located in the cloud.

On-premises

this deployment model is the same as legacy IT

infrastructure, but it might also use application management and virtualization technologies to

increase resource utilization.

Similarities between AWS and traditional IT

Advantage #1 Trade capital expense for variable expense

are funds that a company uses to acquire, upgrade, and maintain physical assets such as property, industrial buildings, or equipment.

Advantage #2 Benefit from massive economies of scale

By using cloud computing, you can achieve a lower variable cost than you can get on your own.

Advantage #3 — Stop guessing capacity

Eliminate guessing about your infrastructure capacity needs. When you make a capacity decision before you deploy an application, you often either have expensive idle resources or deal with limited capacity

Advantage #4—Increase speed and agility

In a cloud computing environment, new IT resources are only a click away, which means that youreduce the time it takes to make those resources available to your developers from weeks to just minutes.

Advantage #5—Stop spending money on running and maintaining data centers:

Focus on

projects that differentiate your business instead of focusing on the infrastructure

Advantage #6—Go global in minutes:

You can deploy your application in multiple AWS Regions around the world with just a few clicks. As a result, you can provide a lower latency and better experience for your customers simply and at minimal cost

web service

any piece of software that makes itself available over the internet and uses a standardized format such as Extensible Markup Language (XML) or JavaScript Object Notation (JSON)—for the request and the response of an application programming interface (API) interaction

AWS

is a secure cloud platform that offers a broad set of global cloud-based products

What is AWS?

Categories of AWS services

Three ways to interact with AWS

AWS Management Console

The console provides a rich graphical interface to a majority of the features offered by AWS

AWS Command Line Interface (AWS CLI)

The AWS CLI provides a suite of utilities that can be launched from a command script in Linux, macOS, or Microsoft Windows

Software development kits (SDKs):

WS provides packages that enable accessing AWS in a variety of popular programming languages. This makes it easy to use AWS in your existing applications and it also enables you to create applications that deploy and monitor complex systems entirely through code.

AWS Cloud Adoption Framework (AWS CAF)

practices to help organizations build a comprehensive approach to cloud computing across the organization and throughout the IT lifecycle to accelerate successful cloud adoption

.

Business perspective

an use the AWS CAF to create a strong business case for cloud adoption and prioritize cloud adoption initiatives.

People perspective

can use the AWS CAF to evaluate organizational structures and roles, new skill and process requirements, and identify gaps.

Governance perspective

program managers, enterprise architects, business analysts, and portfolio managers) can use the AWS CAF to focus on the skills and processes that are needed to align IT strategy and goals with business strategy and goals.

Platform perspective

use a variety of architectural dimensions and models to understand and communicate the nature of IT systems and their relationships. They must be able to describe the architecture of the target state environment in detail.

Security perspective

must ensure that the organization meets security objectives for visibility, auditability, control, and agility. Security perspective stakeholders can use the AWS CAF to structure the selection and implementation of security controls that meet the organization’s needs

Operations perspective

define how day-to-day, quarter-to-quarter, and year-to-year business is conducted. Stakeholders from the Operations perspective align with and support the operations of the business.