When dealing with increased demand on your applications within AWS, you'll encounter two primary methods of scaling: vertical and horizontal scaling. Here's a breakdown of their differences: AWS Training in Pune

Vertical Scaling (Scaling Up):

• Concept:
  • Vertical scaling involves increasing the resources of a single instance or server. This means adding more CPU, RAM, or storage to an existing machine. AWS Course in Pune
• Analogy:
  • Think of it as upgrading your computer's hardware to make it more powerful.
• AWS Example:
  • In AWS, you might vertically scale an Amazon EC2 instance by changing its instance type to one with more processing power and memory. AWS Classes in Pune
• Limitations:
  • There's a limit to how much you can vertically scale a single machine. Eventually, you'll reach the maximum capacity of the hardware.
  • Vertical scaling can often require downtime during the upgrade process.

Horizontal Scaling (Scaling Out):

• Concept:
  • Horizontal scaling involves adding more instances or servers to your application. This distributes the load across multiple machines.
• Analogy:
  • Think of it as adding more computers to a network to handle increased workload.
• AWS Example:
  • In AWS, you might horizontally scale a web application by adding more EC2 instances behind a load balancer.
• Advantages:
  • Horizontal scaling can handle very large increases in traffic.
  • It typically provides greater fault tolerance, as the failure of one instance doesn't bring down the entire application.
  • Often has less down time than vertical scaling.
• Considerations:
  • Horizontal scaling can increase the complexity of your infrastructure.

Key Differences Summarized:

• Vertical Scaling:
  • Increases the power of a single server.
  • Limitations in maximum capacity.
  • Can result in downtime.
• Horizontal Scaling:
  • Increases the number of servers.
  • Highly scalable.
  • Increased complexity.

In AWS, the ideal approach often involves a combination of both vertical and horizontal scaling, depending on the specific needs of your application.