In English, we call external servers that hold our data "clouds." What do they call them in Czech?

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I guess we don't translate it and we only pronounce it in Czech. For example:
The data is saved in the cloud = Data jsou uložena v kloudu.

If it's not the case I hope someone correct me.

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I agree with Tomas that we use the same word, but I think it is mostly written with c (cloud, data jsou uložena v cloudu). I don't remember I have ever seen "kloud" written with k.