Multiple context mode allows you to partition a single ASA into multiple virtual firewalls, each with its own security policy, interfaces, and management IP address. This mode is useful for providing security services to different customers or tenants on a shared appliance, while maintaining separation of management and configuration. Each context acts as an independent device and can be in either routed or transparent mode.
You can also assign different administrators to each context and limit their access to specific commands and features. Multiple context mode is supported in Cisco ACI with the ASA device package version 1.2 or later. References:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/L4-L7_Service_Graph_Deployment_
https://www.cisco.com/c/en/us/td/docs/security/asa/asa96/configuration/general/asa-96-general-config/intro-fw.h