Elastic Load Balancing & Auto Scaling Groups

Scalability and High Availability

Vertical Scalability
Scaling one thing.

Horizontal Scalability
Increase the size of an institution.

High Availability

• High Availability usually goes hand
  in hand with horizontal scaling

• At least 2 Availability Zones

• The goal of high availability is to
  survive a data center loss
  (disaster)

Scalability vs Elasticity vs Agility

Load Balancing

ELB

Gateway Load Balancer
Gateway Load Balancer

Auto Scaling Group

Auto Scaling Strategies

Summary