[AWS] EC2 vs ECS vs Lambda

• EC2 (Elastic Cloud Compute) >> Manage Infrastructure
  • Pros
    • Manage Instances up or down
      • bring down or tear down when it's needed
    • Memory, Compute, Cloud Optimization
      • Different Sizes
    • Extremely Flexible
  • Cons
    • Security (in and out)
  • How?
    • Load Balancers (LG) - hit this first
      • Target Groups (TG)
        • Auto Scling Groups (ASG) - EC2 feeling the traffic
• ECS (Docker Eco System)
  • EC2 Machine (Clusters + Tasks)
    • Treat a pool of ECS as Abstract Resources
      • and deploy tasks to these clusters >> long living or one off
    • Clusters paired with EC2
    • Elastic Container Repository: Private Hub to maintain it.
  • Operating on Docker Systems
  • Diagram
    • Load Balancer
      • Hit the Load Balancer first
    • Clusters
      • Fargate (alternative options)
      • 2 EC2 Machines
        • Agents (EC2)
        • Docker Containers

• Lambda
  • Operate at the Function levels
    • Unit of Code (Don't have to worry about the infrastructure)
    • Upload some codes fo console 
  • Abstract lots of complexities
  • ARN
  • Lambda SDK and invoke it. >> load all functions
    • Powerful Concept (we don't have to worrry about the infrastructure)
  • EX:
    • Upload Lambda Function
      • Shielding you from Load Balancer, Docker Container, and EC2 Machine
    • Connect it with GateWay (API)
      • User Request >> for ward it to Lambda Function
  • Pros
    • Solve problems with complexity

 

How to Choose?

• Flexibility and Knowledge you have
• Large Flexibile + Complexity + Knows everything
  • EC2
    • High Degree of Management
• ECS: Pretty Fair Middle Ground
  
  • Abstract
  • Cluster manage EC2 Machine >> bring containers up or down.
• Lambda
  • Tradeoffs
  • 30 min max invocation time for the single lambda time
  • Paying for number of invocations and duration and space
  • Less Control over how your application runs.
•