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...

  IAM Introduction to IAM -  AWS identity and management is a web service that helps you to securely control access to AWS resources You use IAM to control who is authenticated and authorized to use resources IAM allows you to create and manage AWS users and groups , and use permissions to allow or deny their access to AWS resources IAM is a fundamental part of AWS security, as it allows you to implement the principle of least privilege , ensuring that users and applications have only the permissions they need to perform their tasks IAM also provides features such as multi-factor authentication (MFA) , password policies, and access keys to enhance the security of your AWS environment Features of IAM -  IAM User  -   IAM allows you to create and manage users in your AWS account Each IAM user has a unique name and security credentials, which are used to authenticate and authorize their access to AWS resources IAM users have security credentials that are us...