
die Domäne
domain / field
An area in which someone has special knowledge or special skills; a specialty or field of expertise.
Die Quantenphysik ist wirklich nicht meine Domäne.
Quantum physics is really not my domain.
domain
Loading your saved state.

domain / field
An area in which someone has special knowledge or special skills; a specialty or field of expertise.
Die Quantenphysik ist wirklich nicht meine Domäne.
Quantum physics is really not my domain.

domain
In information technology, a uniquely named section of the internet that is under common administration, such as a website address.
Ich muss noch eine passende Domäne für meine neue Webseite registrieren.
I still need to register a suitable domain for my new website.

estate / domain
Historically, a large estate owned by the state or by a ruler.
Früher gehörte das ganze Land zur königlichen Domäne.
In the past, the whole land belonged to the royal domain.
The word 'Domäne' (domain) comes from the Latin 'dominus' (lord, master). This origin connects all meanings: the estate of a ruler, a field that one 'masters,' and an 'area' on the internet.
Die digitale Forensik ist seine absolute Domäne.
Digital forensics is absolutely his domain.
The context makes clear which meaning is intended. Words like 'Website' (website) or 'registrieren' (to register) point to the IT meaning, fields like 'Physik' (physics) point to a specialty, and terms like 'königlich' (royal) or 'Landgut' (estate) point to the historical meaning.
Für unser Projekt müssen wir noch eine .de-Domäne kaufen.
For our project, we still need to buy a .de domain.
In the sense of 'Spezialgebiet' (specialty), 'Domäne' (domain) is very often used with a possessive pronoun. The negative formulation 'Das ist nicht meine/seine/ihre Domäne' (That is not my/his/her domain) is especially common.
Kochen ist nicht gerade meine Domäne, aber ich gebe mein Bestes.
Cooking is not exactly my domain, but I do my best.
In an IT context, 'Domäne' (domain) is often combined with certain verbs. Typical phrases are: 'eine Domäne registrieren' (to register a domain), 'eine Domäne kaufen' (to buy a domain), 'eine Domäne verwalten' (to manage a domain), or 'eine Domäne einrichten' (to set up a domain).
Er hat vergessen, seine Domäne rechtzeitig zu verlängern.
He forgot to renew his domain on time.
area / field
Gebiet and Domäne can both refer to a field of study or activity. Gebiet names the area neutrally. Domäne additionally suggests that someone has particular knowledge or skills in it, so it is especially suitable when talking about personal expertise or responsibility.

Datenanalyse ist ihre Domäne, denn darin kennt sie sich besonders gut aus.
Data analysis is her area of expertise because she knows it particularly well.
Datenanalyse ist ein Gebiet, in dem sie seit zwei Jahren arbeitet.
Data analysis is a field she has been working in for two years.