There are two types of passive in German:

The passive voice is used when the agent is not very relevant or unknown. On the other hand, in the passive voice, the subject is the object (on which the action is carried out) In the active voice the agent (the thing or person that is carrying out the action) is the subject of the sentence. In German, just like in English, there is an active voice (Aktiv or Tätigkeitsform) and the passive voice (Passive or Leidensform).