I file sono già nel cloud.

Because file starts with a normal consonant sound, f. For most masculine plural nouns beginning with a consonant, Italian uses i.

• il libro → i libri
• il file → i file

You use gli with masculine plurals that begin with:

• a vowel: l’amico → gli amici
• z, s + consonant, gn, ps, x, etc.: lo studente → gli studenti

So i file is the correct form.

Here it is plural. In Italian, many borrowed words from English do not change form in the plural, so file can mean either file or files depending on the context.

In this sentence, you know it is plural because of:

• i = plural masculine article
• sono = plural form of essere

Compare:

• il file è già nel cloud = singular
• i file sono già nel cloud = plural

Sono is the third person plural of essere and agrees with the plural subject i file.

Agreement is the key point:

• il file è = the file is
• i file sono = the files are

So the verb changes according to whether the subject is singular or plural.

Già means already.

In this sentence, it tells you that the files are already in the cloud, so the action/result is not new or future anymore.

Its position here is very natural:

• I file sono già nel cloud.

Italian often places già after the verb and before the rest of the phrase. That is usually the most neutral word order in sentences like this.

Sometimes yes, but I file sono già nel cloud is the most natural neutral version.

For example:

• Già, i file sono nel cloud does not mean the same thing. Here già sounds more like yes / indeed / that’s right, depending on context.
• I file già sono nel cloud is possible only in special, marked style, but it is not the normal everyday wording.
• I file sono nel cloud già sounds unusual unless you are giving strong emphasis in speech.

So for standard Italian, keep già where it is.

Nel is the contraction of in + il.

• in = in
• il = the
• in + il = nel

So nel cloud literally means in the cloud.

This kind of contraction is very common in Italian:

• in + il = nel
• in + lo = nello
• in + la = nella
• in + i = nei
• in + gli = negli
• in + le = nelle

Yes, in normal tech Italian, cloud is usually treated as a masculine noun: il cloud.

That is common with many English loanwords in Italian. When there is no long-established native gender pattern, borrowed nouns are often treated as masculine by default.

So:

• il cloud
• nel cloud
• i servizi cloud or il file nel cloud, depending on structure

Sometimes you may hear both, but they are not always felt exactly the same.

• nel cloud = in the cloud, emphasizing location inside that digital environment
• sul cloud = on the cloud, sometimes used in tech speech, often meaning hosted or available on a cloud platform

For your sentence, nel cloud is a very natural choice because it matches the idea of the files being in the cloud.

So:

• I file sono già nel cloud = excellent, standard choice

Because Italian normally does not need a subject pronoun when the subject is already clear.

Here the subject is explicitly stated as i file, so there is no need to add a pronoun like they.

Italian often works this way:

• Sono nel cloud = They are in the cloud / They’re in the cloud, if the context already makes the subject clear
• I file sono nel cloud = the subject is stated directly

So the sentence is complete exactly as it is.

In modern Italian tech usage, file is usually pronounced close to the English word file, roughly fail.

Even though the word is English, it still takes Italian articles and follows Italian grammar:

• il file
• i file
• un file
• nel file or nel cloud, depending on meaning

So the pronunciation is borrowed, but the grammar around it is Italian.