In healthcare, ECHs provide scalable computational resources that can handle large volumes of medical images. They allow for quick access and processing of data which could potentially lead to faster diagnosis and treatment. With AI algorithms running on these clouds, advanced analytics and deep learning models can be applied to identify patterns and make predictions.

For instance, an ECH could be used to train machine learning models on medical images to detect early signs of diseases like cancer or Alzheimer's. The same technology could also assist radiologists in interpreting complex scans, thus improving accuracy and efficiency.

As for the jewelry industry, ECHs can be used for creating D virtual designs and simulations. This would save time and reduce costs associated with traditional design methods. Furthermore, ECHs can host e-commerce platforms, allowing customers to browse and purchase jewelry online from anywhere, anytime.

Regarding virtual meeting services, ECHs offer a reliable and flexible solution for hosting video conferencing platforms. They can accommodate sudden spikes in traffic without any performance degradation, ensuring smooth communication even during large-scale meetings.

Finally, smart voice assistants such as Siri or Alexa are built upon extensive cloud infrastructure. ECHs can support real-time speech recognition and natural language processing tasks required by these AI-powered devices.