Learn Turkish: Daveti şirket adına kabul etti. - She accepted the invitation on behalf of the company.

When representing institutions, organizations, or concepts, Turkish often uses the bare noun, treating it like a noun compound. You usually only use the genitive suffix with adına when representing specific people or pronouns, like Ali'nin adına or benim adıma.

How does the word adına break down to mean "on behalf of"?

It comes from ad (name). Adding the possessive -ı makes adı (its name). Then we add the buffer -n- and the dative suffix -a (to/for), creating adına. Literally, it means "to its name" or "in its name," which translates perfectly to "on behalf of."

Could I just say şirket için here?

You could, but it changes the meaning slightly. Şirket için just means "for the company" (perhaps as a favor or to benefit them). Şirket adına specifically means "on behalf of the company," making it clear she is acting as their official representative.

Why does davet take the -i suffix here?

Davet (invitation) takes the definite accusative suffix -i because it is the specific direct object of the verb kabul etti (accepted). This indicates she accepted the specific invitation, rather than just any general invitation.