The software acts as a "universal bridge." Once configured, it creates virtual versions of your hardware (e.g., "Microphone (NVIDIA Broadcast)") which can then be selected as the input device in virtually any application, including: : OBS Studio, Streamlabs, and Twitch Studio.
Power users with older RTX cards (2060/2070) often prefer V1.0.0.25 because it consumes fewer resources. Streamers who only need "noise removal + background blur" find the latest versions bloated with unnecessary features like "eye contact" (AI-generated eye correction) which adds latency. Nvidia Broadcast V1.0.0.25