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Cloud Computing

TermDefinition
Scalability The costs of scaling up service to more users as a linear, planned model.
"Hosted Private" - Cloud Deployment Model Hosted by a third-party for exclusive use by an organization. More secure, better performance, more expensive.
Elasticity Refers to the cloud environment's ability to handle changes on demand, in real time.
"Public," or "multitenant" - Cloud Deployment Model A service offerred to TENANTS that offers SUBSCRIPTIONS, or PAY-AS-YOU-GO financing, while offering lower-tier services free. It is a SHARED RESOURCE and there are RISKS regarding PERFORMANCE and SECURITY.
"Private-Cloud" - Cloud Deployment Model Infrastructure that is COMPLETELY PRIVATE and OWNED by the organization.
"Community" - Cloud Deployment Model Several organizations sharing the costs of either a Hosted-Private or fully Private Cloud.
"Hyprid" - Cloud Deployment Model A solution implementing any mix of public/private/community/hosted/onsite/offsite solution.
Infrastructure as a Service (IaaS) - Cloud Service Models A means of provisioning IT resources such as servers, load balancers, and SAN components quickly.
Software as a Service (SaaS) - Cloud Service Models Provisioning applications as a pay-as-you-go or lease arrangement rather than purchasing software licenses.
Platform as a Service (PaaS) - Cloud Service Models Provides resources somewhere between SaaS and IaaS. Would provide virtual hardware resources (IaaS) and also back-end software to run on them.
Desktop as a Service (DaaS) - Cloud Service Models Virtual Desktop Infrastructure (VDI) provisioning.
Options to connect enterprise to Cloud Web App, VPN, or Colocation (direct link by cross connect cable or VLAN)
Automation - IaaS Using scripts and APIs to provision and de-provision systems without manual intervention.
Two types of automation tool - IaaS - Imperative tools: literal command execution a la Bash/PowerShell scripting - Delcarative tools take the requested configuration as input and allow an "implementation platform" to decide how it is achieved.
Orchestration - IaaS Automation of MULTIPLE coordinated steps in a deployment process.
Created by: user-1866790
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