Eating in the cloud means that someone pays online and someone orders food in a restaurant. For example, if I order a fried shredded potato for ten yuan, I want a shredded potato, which is what I mean.
This sentence means through the internet and mobile phones. Have dinner. Voice means through high-tech internet. Travel around the world and observe the food around you. This can be understood as eating somewhere. In a word, it is not really eaten, but through the internet.