AWS Cloud Practitioner Module 1 and 2 Knowledge Check

• Cloud Computing: On-demand delivery of IT resources over the internet with pay-as-you-go pricing.
• EC2 Instance families:
  • General Purpose: balance of compute, memory, and networking resources.
  • Compute Optimized
  • Memory Optimized: ideal for workloads that process large datasets in memory, such as high-performance databases
  • Accelerated Computing
  • Storage Optimized: designed for workloads that require high, sequential read and write access to large datasets on local storage.
• EC2 Scaling:
  • Vertical: More powerful machine
  • Horizontal: More machines
• EC2 Auto Scaling: Automated horizontal scaling of EC2 instances. To distribute work between instances use ELB: Elastic Load Balancing. EC2 Has different billing options:
  • On-demand: require a minimum contract length, not able to withstand interruptions.
  • spot instances
  • reserved instances: require a commitment of either 1 year or 3 years. The 3-year option offers a larger discount.
  • savings plans
  • Dedicated instances: run in a virtual private cloud (VPC) on hardware that is dedicated to a single customer. They have a higher cost than the other response options, which run on shared hardware.
• Messaging services:
  • Amazon SQS (Amazon Simple Queue Service): service that enables you to send, store, and receive messages between software components through a queue.
  • Amazon SNS (Simple Notification Service): publish/subscribe service. Using Amazon SNS topics, a publisher publishes messages to subscribers.

Note: Example of Load balancing: Ensuring that no single Amazon EC2 instance has to carry the full workload on its own

• AWS Has different types of computing services:
  • EC2 (virtual servers)
  • Amazon ECS (Elastic Container Service)
  • Amazon EKS (Elastic Kubernetes Service): to deploy and manage containerized applications
  • AWS Fargate: Running containers on top of serverless compute platform
  • AWS Lambda: lets you run code without provisioning or managing servers.