18 Questions
What is one of the essential characteristics of Cloud Computing?
On-Demand Self-Service
What is the purpose of the self-service interface in Cloud Computing?
To enable users to provision resources without human intervention
What is the result of Resource Pooling in Cloud Computing?
Multiple consumers share the same resources
What is the benefit of Rapid Elasticity in Cloud Computing?
Ability to scale resources rapidly as required
What is the pricing model used in Cloud Computing?
Pay-per-use basis
What is the advantage of Cloud Computing in terms of physical space?
Requires less physical space
What enables accessing Cloud services from anywhere across the globe?
Broad Network Access
What is the benefit of Metered Service in Cloud Computing?
Transparency in resource usage and billing
What is the advantage of On-Demand Self-Service in Cloud Computing?
Provisioning of resources without human intervention
What is the result of Broad Network Access in Cloud Computing?
Accessing Cloud services from a broad range of client platforms
What is a major advantage of using IaaS over physical servers?
Reduced cost for hardware and maintenance
What is a characteristic of IaaS?
Resizable compute capacities, such as RAM and processing power
What is a major difference between PaaS and traditional application development?
PaaS provides all the necessary platforms for application development
What is a characteristic of public cloud services?
Services are offered over the public internet and can be purchased on demand
What is a major advantage of using cloud services?
Low maintenance and cost savings
What is a major difference between IaaS and PaaS?
IaaS provides virtualized servers and storage, while PaaS provides a platform for application development
What is SaaS an example of?
A CRM system
What is a major advantage of using PaaS?
All the necessary platforms for application development are readily available
Study Notes
Cloud Computing Overview
- Enables consumers to get computing resources as and when required, without human intervention
- Facilitates self-service provisioning of resources using a user-friendly interface
- Users have their own admin console to view and manage their existing infrastructure
Essential Characteristics of Cloud Computing
On-Demand Self-Service
- Enables consumers to get computing resources as and when required, without human intervention
- Facilitates self-service provisioning of resources using a user-friendly interface
- Users have their own admin console to view and manage their existing infrastructure
Broad Network Access
- Cloud services are accessed via the network, usually the internet, from a broad range of client platforms
- Enables accessing services from anywhere across the globe
Resource Pooling
- IT resources are pooled to serve multiple consumers, based on a multi-tenant model
- Consumers have no knowledge about the exact location of the resources provided
- Resources are dynamically assigned and reassigned based on consumer demand
Rapid Elasticity
- Ability to scale IT resources rapidly, as required, to fulfill changing needs without interruption of service
- Resources can be both scaled up and scaled down dynamically
- The Cloud appears to be infinite, allowing consumers to start with minimal computing power and expand as needed
Metered Service
- Consumers are billed based on the metered usage of Cloud resources
- Cost incurred on a pay-per-use basis
- Pricing/billing model is tied up with the required service levels
- Resource usage is monitored and reported, providing transparency for a chargeback
Cloud Service Models
Infrastructure-as-a-Service (IaaS)
- Provides resizable compute capacities, such as RAM and processing power
- Enables users to increase RAM or processing power as needed
- Examples: virtualizing multiple servers into a single physical server
Platform-as-a-Service (PaaS)
- Provides a hosted platform for developing and deploying applications
- Enables users to log in and use the platform, with all necessary tools and languages readily available
- Examples: custom-built applications, off-the-shelf applications
Software-as-a-Service (SaaS)
- Provides software applications over the internet, eliminating the need for local installation
- Examples: CRM (Customer Relationship Management), with advantages such as increased productivity and improved customer relationships
Cloud Deployment Models
Public Cloud
- Allows users to access and obtain services over the public internet
- Enables on-demand access to services, with some services available for free
- Security threat due to less authority over the public internet
Learn about the essential characteristics of Cloud Computing, different Cloud services and deployment models, economics, benefits, and challenges.
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