While the AWS Cloud provides many additional components and services beyond what is offered by Elastic Load Balancer(ELB), Kemp’s Virtual LoadMaster VLM for AWS has additional and enhanced features and capabilities that provide a rich set of integrated functionality, easily configured and managed via the Web User Interface. The same set of capabilities are available when LoadMaster, as an appliance or virtual machine, is used on premises. Having a common interface across all environments is a big advantage and provides a simpler, consistent management experience when deploying hybrid or heterogeneous cloud environments.

Features Elastic Load Balancer (ELB) Virtual LoadMaster (VLM)
Layer 4 Load Balancing    
Layer 7 Load Balancing    
Pre-configured application templates    
High Availability    
Scheduling Methods Round Robin Only Advanced Scheduling Methods
Server Persistence L4 Only L4/L7 (Advanced options)
SSL Termination/Offload    
Content Caching/Compression    
VM Resource Availability Awareness    
Header Content Switching    
Header Manipulation    
Health Check Aggregation    
TCP multiplexing    
Reverse Proxy    
Advanced Authentication  *  
(Advanced Options)
Web Application Firewall Protection    

* Supported by other services with AWS