Cloud
Most of this is based on the NIST definitions.
NIST characteristics
On-Demand
- Unilateral, no human interaction
Broad Network Access
- Works on phones, laptops, desktops
Resource Pooling
- Multi-tenant
- Location independence
Rapid Elasticity
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Capabilities can be provisioned and released, in some cases automatically
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Resources often appear unlimited
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Scales with demand
Measured Service
- Resource usage is monitored controlled and reported
Service models
SaaS — Software as a Service
Running a providers app on their cloud infrastructure.
- Microsoft 365 (MS Teams)
- Salesforce (CRM)
- Atlassian (Agile)
- Adobe Creative Cloud
PaaS – Platform as a Service
Deploy your own apps into a cloud.
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AWS: Elastic Beanstalk (Java, Python etc.)
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Azure App Service
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Google App Engine
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IBM Cloud Foundry
IaaS — Infrastructure as a Service
Provision compute, storage, and networks on a providers cloud network.
- AWS (Amazon)
- Azure (Microsoft)
- Google Cloud Platform
Deployments
Private
- Provisioned exclusively for one organization
- The organization can have multiple customers
- Can be on or off premise
Community
- Provisioned exclusively for a community with a shared concern
- Mission based
- Security requirements
- Policy Requirements
- Compliance Requirements.
An example is is credit unions.
Public
Open for use by the public.
Hybrid
Merging some private cloud resources, with a public cloud offering.
- Adding AI capability.
References
800-145 The NIST Definition of Cloud Computing