Cloud Concepts Flashcards
What are the 6 advantages of cloud computing
Go global in minutes
Stop spending money running and maintaining data centers
Benefit from massive economies of scale
Increase speed and agility
Stop guessing capacity
Trade capital expense for variable expense
What is high availability?
Highly available systems are designed to operate continuously without failure for a long time.
These systems avoid loss of service by reducing or managing failures.
What is elasticity?
With elasticity, you don’t have to plan ahead of time how much capacity you need. You can provision only what you need, and then grow and shrink based on demand.
What is agility?
The cloud gives you increased agility. All the services you have access to help you innovate faster, giving you speed to market.
What is durability?
Durability is all about long-term data protection. This means our data will remain intact without corruption.
What are Capital Expenditures (CapEx)?
Upfront purchases toward fixed assets.
What are Operating Expenses (OpEx)?
Funds used to run day-to-day operations.
Cloud Computing Models
Infrastructure as a Service (IaaS)
Fundamental building blocks that can be rented.
Cloud Computing Models
Software as a Service (SaaS)
Using a complete application, on demand, that someone offers to users.
Cloud Computing Models
Platform as a Service (PaaS
Develop software using web-based tools without worrying about the underlying infrastructure.
What are the 3 cloud deployment models?
Private Cloud
Public Cloud
Hybrid Cloud
What is a Region?
A physical location in the world that contains availability zones
Fully independent and isolated - If one Region is impacted, the others will not be.
Resource and service specific - Regions are isolated, and resources aren’t automatically replicated across them.
What is an Availability Zone (AZ)?
A collection of one or more data centers. Consist of one ore more physically separated data centers, each with redundant power, networking, and connectivity, housed in separate facilities.
An AZ is associated with a single Region
Physically separated
Connected through low-latency links
Fault tolerant
Allows for high availability
What is an Edge Location?
Used to cache content for speedy delivery - Amazon Cloudfront
