Question: How can I integrate real-time audio calling into my website for customer support?

If you want to add real-time audio chat to your website for customer support, Tencent RTC is a good option. It's a full-fledged platform for adding voice chat, video chat and live streaming to web and mobile apps, with a highly available and scalable infrastructure that can handle tens of millions of concurrent requests. It's geared for high traffic. Tencent RTC works on multiple platforms and offers tiered pricing, including a free trial and pay-as-you-go pricing.

Another option is Whereby, which offers a customizable and scalable video chat API and SDK. It's a good option for telehealth, digital mental health, coaching and eLearning apps. Whereby's platform includes pre-built UI elements, private and secure content and reliable infrastructure for easy integration of real-time video into your apps. Pricing ranges from free to custom.

For a more powerful and scalable option, ZEGOCLOUD is a good option. It offers APIs and SDKs to add real-time voice, video and chat to mobile and web apps. ZEGOCLOUD supports multiple programming languages and frameworks and offers features like video conferencing, live streaming and cloud recording. It's designed for high availability and scalability, so it's good for large-scale apps in a variety of industries.

Last, Daily is an enterprise WebRTC platform that offers high-quality real-time voice and video. It's designed for large-scale apps with features like high-definition recording, compositing and streaming, and is certified under strong security standards like HIPAA. Daily offers APIs and SDKs for multiple platforms and supports up to 100,000 simultaneous participants, so it can handle heavy loads like telehealth and live events.