Application Load Balancer (ALB) now supports Mutual TLS enabling you to authenticate clients while establishing TLS encrypted connections.
With weighted target groups, each target group can be a version of the application. Customer can set weights appropriately to get the desired distribution between the blue/green versions and rollback to blue if the results in green are not satisfactory.
Network Load Balancer now supports Server Name Indicator (SNI)
SNI is an extension to the TLS protocol that enables use of multiple SSL certificates on the same IP and port.
UDP support on Network Load Balancer provides a managed solution for customers, greatly simplifying their deployments by eliminating the need for a proxy server fleet for ingesting UDP traffic.