1 The Cloud Flashcards
What are the significant contributers to the operation value of a large cloud provider like aws
Multiregional presence.
Highly experienced teams of security engineers.
Metered, pay-per-use pricing.
What are signs of a highly available application?
Failover from one region to another.
Demand is met through automatically increasing resources
How does the metered payment model make many benefits of cloud computing possible?
Experiments with multiple configration options is now possible at reduced cost.
Full-stack applications are possible without the need to invest in capital expenses.
What are direct benefits of virtualization?
Fast resouirce provisioning and launching.
Efficient (high-density) use of resources.
What is a hypervisor?
Software used to administrate virtualized resources run on physical infrastructure.
Describe server virtualization
Logically partitioning physical compute and storage devices into multiple smaller virtual devices.
Describe IaaS
Services that give you direct control over underlying compute and storage resources.
Describe PaaS
Services that hide infrastructure complexity behind a simple interface.
Describe SaaS
Services that provide a service to end users through a public network. Gmail is an example.
Describe scalability
The ability of an application ot automatically ad preconfigured compute resources to meet increasing demand.
Describe elasticity.
The ability of an application to increase or decrease compute resources to match changing demand.
What helps AWS provided such scalable resources?
The enormous number of servers that it operates and highly automated infrastructure administration systems.
