Effects SDK gives product teams ready-made background blur, virtual backgrounds, smart framing, lighting correction, overlays, and noise suppression for real-time video or audio apps. Use it when you need on-device media effects without building a custom ML pipeline first; check pricing and browser fallback behavior before production rollout. Use Effects SDK when a product needs polished real-time video or audio features but the team should not spend weeks building segmentation, rendering, and noise suppression from scratch. The practical angle is strongest for WebRTC, meeting, recording, streaming, and support tools that need background blur, virtual backgrounds, framing, lighting correction, overlays, or client-side audio cleanup. Caveats: treat it as an SDK integration, not a one-click widget. Review platform support, fallback behavior, bundle impact, privacy requirements, and the pricing page before shipping it into production. The public GitHub organization is useful for checking sample integrations before committing engineering time. Best fit: teams already building on WebRTC, LiveKit, Zoom Video SDK, Twilio, Agora, or a custom media pipeline that want a shortcut to production-looking media effects.