These characters combine quite literally. `阿里 (Ālǐ)` is the shortened, common way to refer to `阿里巴巴 (Ālǐbābā)`, and `云 (yún)` means “cloud”. So, `阿里云 (Ālǐ yún)` translates directly and transparently to “Alibaba Cloud”.
While not a traditional cultural term, 阿里云 holds immense significance in the context of modern China's technological rise and ambition.
The term 阿里云 is used frequently and straightforwardly in business and technology circles.