Cloud Delivery Models
- Public Cloud:
- Multi-tenant
- Examples:
- AWS
- Azure
- GCP
- Alicloud
- Private Cloud
- Single-tenat
- Examples:
- Openstack
- Hybrid Cloud
- Combination
Cloud Service Models
- IaaS (Infrastructure as a service)
- PaaS (Platform as a Server)
- FaaS (Function as a Service) / Serverless
- SaaS (Software as a Service)
Cloud: Pricing Models
- Pay as you go (on-demand): No-commitments
- pay in hours/seconds
- Reservations: Commitment
- 1-year
- 3-years
How does cloud manage infra
- Regions: A geographical location. Host mulitple AZ’s (>=3)
- Availibility Zones: Which hosts multiple datacenters
- How to choose a Region
- BY policy
- By latency
Terms
- Service: What cloud offers
- Resource: What we create
- Latency: Time taken for network packets to reach servers
