Reliability also know as resiliency is the ability of an application to avoid failure and recover which is quantified in terms of availability, that is the percentage of time an application is performing as expected. Knowing how to design AWS environments to tolerate resource failures doesn't cause an application to …

Facilitating network access to cloud resources and your content generally has three goals, availability, speed and getting the right content to the right users. The DOmain Name System (DNS) is primarily concerned with making resources available across a network using a human readable name. Amazons Route 53 is built to …

CloudTrail, CloudWatch, and AWS Config are three AWS services that can help with the health, performance and security of AWS resources and applications.

Tracking Performance

Understanding how AWS resources are performing can tell is they're powerful enough to handle load and if scaling is necessary.

Detecting Application Problems

Some application …

AWS authentication and authorization are primarily handled by Identity and Access Management (IAM). IAM identities are sometimes called principles.

IAM identities

New AWS account come with a default root user which has full rights over all services and resources. It's recommended this account is heavily protected and power for day-to-day …

A database allows an application to store, organize and quickly retrieve data. Databases come in two flavours, relational and non-relational.

Relational Databases

A relational database contains at least one table, which can be visualized as a spreadsheet with columns and rows. Columns may be called attributes and rows may be …

Amazon's Virtual Private Cloud service provides the networking layer of EC2. By, default every VPC is isolated from all other networks. However, VPCs can be connected to other networks, including the internet and other VPCs.

A VPC can exist only within an AWS region.

VPC CIDR Blocks

A VPC consists …

S3 Service Architecture

Amazon Simple Storage Service (S3) is for you, application and AWS services keep their data, providing an inexpensive and reliable storage solution.

• Maintain backup archives, log files and images
• RAnalytics on big data at rest
• Hosting static websites

S3 is for object storage unlike the volumes for …

EC2 Instances

An EC2 instance is essentially a Virtual Machine but it behaves just like a real server. They have access to storage, memory and a network interface, complete with a clean operating system.

Provisioning an Instance

Configuration of an instances OS and hardware specs (the CPU, memory, storage and …

Cloud Computing and Virtualisation

At the core of all cloud operations is Virtualisation, which allows hardware resources be dived into smaller units. A physical server can host multiple virtual machines running their own complete operating systems. Virtualisation makes it possible to provision a virtual server in a matter of seconds …