EC2 Flashcards
What does EC2 stand for?
Elastic Compute Cloud
What is Amazon EC2?
It is a web service that provides resizable compute capacity in the cloud. Amazon EC2 reduces the time required to boot new server instances to minutes, allowing you to quickly scale capacity, both up and down, as your computing requirements change.
What is the key benefit of EC2?
It changes the economics of computing by allowing you to only pay for capacity that you actually use. It provides developers the tools to build failure resilient applications and isolate themselves from common failure scenarios.
what are the EC2 options available?
On Demand - Pay by the hour (or by the second) with no commitment. Linux has option to pay by sec. Win only has pay by hour option
Reserved - provide you with a capacity reservation. 1-3 year terms. More money you pay upfront, the better.
Spot - much like forex market. If the spot price comes below the bid price then the server instance will be provisioned. If the spot price goes above bid price then the instances will be terminated
Dedicated hosts - physical EC2 server dedicated for our use. This is normally used when your application software licensing agreement mandate you to use dedicated server. Also some govt customers want dedicated servers due to their info sec perception
