AWS Fundamentals

 Elastic Load Balancer (ELB) Why Load Balancer ? -  Spread load across multiple downstream instances Expose a single point of access to your application Seamlessly handle failure of downstream instances Do regular healthchecks to your instances High availability across zones Elastic Load Balancer (ELB) -  Load balancer is a service that uniformly distributes the network traffic and workloads across multiple servers or a cluster of servers  Load balancer increase the availability and fault tolerance of an application ELB sclaes itself a necessary to handle load Incoming traffic distributed across EC2 instances in multiple availability zones Load balancer is the single point of contact for clients Three Types of Elastic Load Balancer s Three Types of Elastic Load Balancers include: Classic Load Balancer ( Layer 4 and Layer 7) Application Load Balancer (Layer 7) Network Load Balancer (Layer 4) Classic   Load Balancer  -  Distributes the inc...

 EC2 (Elastic Compute Cloud) ___________________________________________________________________________________ Introduction to EC2  - Amazon Elastic Compute Cloud (Amazon EC2) is a computing capacity that is scalable in the Amazon Web Services (AWS) Cloud. Using Amazon EC2 eliminates the need to invest in hardware upfront, allowing you to develop and deploy applications more quickly With Amazon EC2 you launch virtual server instances on the AWS cloud. Each virtual server is known as an “instance” Features of EC2 -  Instances are virtual computing environments. Amazon Machine Images (AMIs) are preconfigured templates for your instances that package the bits you need for your server (including the operating system and additional software). AMI is a ISO file Instance types are different configurations of CPU, memory, storage, and networking capacity for your instances Using key pairs, you can secure login information for your instances ( AWS stores the public key, and...