# IMS
> IP Multimedia Subsystem used by carriers for voice and multimedia service delivery

IMS is a telecom core architecture that supports services like VoLTE and VoWiFi.

## What is IMS?
IMS (IP Multimedia Subsystem) is a standards-based core network architecture used by mobile operators to deliver IP voice and multimedia services with carrier-grade control.

## IMS and enterprise UC
IMS improves transport stability and service continuity, while enterprise unified communications features are typically implemented in the application and backend service layers.

## Related Terms
- [VoLTE](/voip-glossary/volte/)
- [VoWiFi](/voip-glossary/vowifi/)
- [Unified Communications](/voip-glossary/unified-communications/)