Learn Turkish: Ürün dağıtımını erken yaptılar. - They did the product distribution early.

It comes from the verb dağıtmak (to distribute, to hand out). By taking the verb stem dağıt- and adding the abstract noun suffix -ım, we get dağıtım (distribution). This suffix is a common way to turn actions into nouns, just like seçmek -> seçim (election/choice).

Why is the ending -ını attached to dağıtım?

There are two suffixes here, connected by the buffer letter -n-. First, ürün dağıtımı is an indefinite noun compound ("product distribution"), so it needs the possessive marker -ı on the second word. Second, this entire phrase is the specific direct object of the verb yaptılar, so it takes the accusative case marker -ı at the very end: dağıtım + ı (possessive) + n (buffer) + ı (accusative).

Could we just say Ürünü erken dağıttılar instead of using dağıtımını yaptılar?

Yes, absolutely! Ürünü erken dağıttılar (They distributed the product early) is perfectly natural. Using the derived noun dağıtım with the helper verb yapmak (to do/make) sounds a bit more formal or institutional, emphasizing the logistical event or process of distribution rather than just the physical action.

Why is ürün (product) singular here when a distribution usually involves many products?