This document discusses load balancing as a service (LBaaS) in OpenStack Havana. It covers: 1. A focus for Havana will be supporting multiple load balancing technologies and vendors through LBaaS drivers while maintaining a common tenant API. 2. The architecture proposed separates the LBaaS plugin from drivers for specific load balancers. This allows different load balancing solutions like network services, virtual appliances, and hardware to be used. 3. Additional topics to be addressed for Havana include the tenant API to support multiple vendors, load balancing across networks through SNAT/DSR, and hierarchical modeling of load balancing configurations.