Lesson 1 Flashcards
Cloud service provider (CSP)
An organization that hosts and maintains data centers that offer SaaS, PaaS, and IaaS services to customers.
Information Technology Infrastructure Library (ITIL)
A framework and library of IT service management best practices.
Cloud computing
A service model that delivers applications, infrastructure, and other resources as a service by using a pay-as-you-go model.
5 characteristics of cloud computing
As defined by the National Institute of Standards and Technology (NIST):
- On-demand self-service
- Broad network access
- Resource pooling
- Rapid elasticity
- Measured service
On-demand self-service
Consumers can provision resources as needed and automatically.
Broad network access
Services are available across the network from commonly available clients.
Resource pooling
The Cloud Service Provider (CSP) pools resources in a multi-tenant model and adjusts resource allocation on an on-demand basis, and the specific distribution of hardware resources are abstracted from the consumer.
Rapid elasticity
Resources are provisioned and released to adjust for changes in demand and consumption. This process may be automatic or manual.
Measured service
Metering of resources is monitored, controlled, and billable.
4 main service models
- Software as a Services (SaaS
- Platform as a Service (PaaS)
- Infrastructure as a Service (Iaas)
- Anything as a Service (XaaS)
Software as a Service (SaaS)
The management of the hardware infrastructure, operating system, and application layers by a cloud service provider.
Often provided for end users to access line of business applications.
The consumer is provided with the direct use of software.
Responsibility for the hardware where that software runs, the operating system upon which it runs, and the installation and patching of the software itself are all offloaded to the CSP.
Platform as a Service (PaaS)
The management of the hardware infrastructure and operating system layers by a CSP.
Often provided for database administrators and developers.
The service structure is provided by the CSP.
It is up to the consumer to populate that structure, manage it on a day-to-day basis, and assume responsibility for the content. Support for the hardware, as well as the service platform that hosts the content, is offloaded to the CSP.
Infrastructure as a Service (IaaS)
A cloud service model that provides basic computer and network functionality by using pooled hardware resources and virtual machines.
The hardware infrastructure is provided to the consumer. The consumer assumes responsibility for all layers above that hardware.
The CSP manages hardware failures, firmware updates, device drivers, hardware compatibility, etc.
The consumer installs and manages the operating system on top of the hardware, as well as any services and applications that run above that operating system.
Anything as a Service (XaaS)
“Anything as a Service” is a catch-all phrase for technology solutions that are moved to the cloud.
Examples:
Database as a Service (DBaaS)
Desktop as a Service (DaaS)
Communications as a Service (CaaS)
Collaboration as a Service (also CaaS)
Monitoring as a Service (MaaS)
3 cloud components and clients
- Client platform (from which the cloud services are being accessed)
- Data center (where cloud services are being hosted)
- Network connection (path between client devices and cloud services)
4 cloud deployment models
- Private - services a single org.
- Public - multiple org’s share resources from CSP
- Community - Services multiple orgs with similar service needs
- Hybrid - combination of at least 2: public, private, or community.
Private cloud
A cloud deployment model that consists of cloud services that are available only to the organization utilizing it with no resources shared with other organizations.
Public cloud
A cloud deployment model that consists of cloud services that are shared among subscribers and provided by a cloud service provider and accessed across the Internet.
Community cloud
A cloud deployment model that consists of cloud resources shared by organizations with similar security or service requirements.
Hybrid cloud
A cloud deployment model that combines at least 2 of the other deployment models: public, private, and community.
Shared responsibility model
CSP is responsible for the security “of” the cloud, the consumer is responsible for security “in” the cloud.
The CSP secures the hosting data centers and technologies while the consumer secures the data and processes operating inside the cloud.
Software defined networking (SDN)
Virtualized network services that provide flexible and dynamic management.
