What is AWS?
- Stands for Amazon Web Services
- A secure cloud services platform
What is Cloud Computing?
The use of remote servers through a network to do computation tasks like program execution, storage, management and processing of data
What is PaaS?
- Platform as a service
- A category of cloud computing services that provides a platform for customers to develop run and manage applications without the complexity of developing the infrastructure associated with developing and launching an application.
What is IaaS?
- Infrastructure as a service
- A form of cloud computing that provides a virtualized computing resources over the internet.
What is SaaS?
Software as a service is a software distribution model in which a third-party provider hosts applications and makes them available to customers over the internet. (google docs, gmail, etc.)
What is EC2?
- Elastic Compute Cloud
- Essentially a virtual machine on a server with a specific allocation for hardware resources based on plans
- The more resources the more expensive
- Used for running a server to host an application that users can connect to.
What is EBS?
- Elastic Block Store
- A traditional ‘block’ storage resource that is provisioned to other AWS services.
What is AMI?
- Amazon Machine Image - an OS image to run on an EC2, that is the operating system that the ec2 has
- There are a few to choose from including amazon linux, ubuntu, windows, etc.
What is ELB?
- Elastic Load Balancing
- A load balancing service for AWS.
- ELB automatically distributes incoming application traffic and scales resources to meet traffic demands.
What are the types of ELB?
- Application load balancers
- Network load balancers
- Classic load balancers
What is Autoscaling?
A method used in cloud computing where the number of instances for a server scales automatically based on the connection and request load.
What is a Security Group?
A virtual firewall that controls the traffic for one or more instances. When an instance is launched you associate a security group to it for it to filter traffic down to only IPs matching that group.
What is S3?
- Amazon’s Simple Storage Service.
- Designed with a simple web service interface that can be used to store and retrieve data.
Can also be used for static web hosting.
What is RDS?
- Relational Database Service
- Makes it easy to set up, operate, and scale a relational database like postgreSQL, mySQL, or OracleSQL.
Region vs Availability Zones
- AWS Regions are a separate geographical area and has multiple isolated locations that are availability zones
- Availability zones are the locations that are available to put instances
- For example US East is a region, and Ohio and N. Virginia are availability zones.
What is resiliency?
A systems capability to handle disaster such as weather, power, or other catastrophe that can affect the systems and their services so that the application can stay available to users.
