Module 1 Flashcards
Cloud Concepts Overview
is the on-demand delivery of compute power, database, storage, applications, and other IT resources via the internet with pay-as-you-go pricing.
Cloud Computing
enables you to stop thinking of your infrastructure as hardware, and instead think of (and use) it as software.
Cloud Computing
infrastructure is thought of as hardware.
Traditional Computing Model
Hardware solutions:
*Require space, staff, physical security, planning, capital expenditure
*Have a long hardware procurement cycle
*Require you to provision capacity by guessing theoretical maximum peaks
Traditional Computing Model
Infrastructure as software
Cloud Computing Model
Software solutions:
*Are flexible
*Can change more quickly, easily, and cost-effectively than hardware solutions
*Eliminate the undifferentiated heavy-lifting tasks
Cloud Computing Model
Three main Cloud Service Models
IaaS (infrastructure as a service)
PaaS (platform as a service)
SaaS (software as a service)
provides you with the highest level of flexibility and management control over your IT resources.
Infrastructure as a service (IaaS)
It is the most similar to existing IT resources that many IT departments and developers are familiar with today
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.
Infrastructure as a service (IaaS)
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.
Platform as a service (PaaS)
enable you to focus on the deployment and management of your applications.
Platform as a service (PaaS):
Services in this category provide you with a completed product that the service provider runs and manages.
Software as a service (SaaS)
refers to end-user applications.
Software as a service (SaaS)
A common example of ___ web-based email, where you can send and receive email without managing feature additions to the email product or maintaining the servers and operating systems that the email program runs on.
Software as a service (SaaS)
Cloud computing deployment models
Cloud
Hybrid
On-premises (private cloud)
is fully deployed in the cloud, and all parts of the application run in the cloud.
cloud-based application
Applications in the cloud have either been created in the cloud or have been migrated from an existing infrastructure to take advantage of the benefits of cloud computing
True
___ can be built on low-level infrastructure pieces or they can use higher-level services that provide abstraction from the management, architecting, and scaling requirements of core infrastructure.
Cloud-based applications
is a way to connect infrastructure and applications between cloud-based resources and existing resources that are not located in the cloud.
hybrid deployment
The most common method of ___ is between the cloud and existing on-premises infrastructure.
hybrid deployment
This model enables an organization to extend and grow their infrastructure into the cloud while connecting cloud resources to internal systems.
Hybrid
Deploying resources on-premises, using virtualization and resource management tools, is sometimes called
private cloud