15 - Load Balancers

Question 1

ALB

Answer 1

• ALBs only support HTTP and HTTPS protocols.
• ALB supports load balancing to IP addresses, EC2 instance IDs, or Lambda functions.
• Only use ALB for Tracing with Xray etc.
• support SSL/TLS termination and Server Name Indication (SNI)
• does not support direct integration with Elastic IP addresses
• Static IP addresses can still be provided to consumers of ALB-based applications via AWS Global Accelerator, a service that provides fixed entry points to your application in single

Question 2

NLB

Answer 2

• NLBs support any TCP, TLS, UDP, or TCP_UDP protocol, making them far more flexible than ALBs in terms of supported network protocols
• NLB supports load balancing to IP addresses, or EC2 instance IDs.
• support SSL/TLS termination and Server Name Indication (SNI)
• To provide static IP addresses for an NLB-based application, Elastic IP addresses can be used to associate static IP addresses to the network interface created to support each Availability Zone

Question 3

CLB

Answer 3

• CLB supports load balancing to EC2 Instance IDs.
• does NOT support SSL/TLS termination and Server Name Indication (SNI)