die Konversion
conversion
The change to another religion or worldview.
Seine Konversion zum Judentum erforderte ein langes Studium.
His conversion to Judaism required a long period of study.

conversion
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conversion
The change to another religion or worldview.
Seine Konversion zum Judentum erforderte ein langes Studium.
His conversion to Judaism required a long period of study.

'Konversion' (conversion) is the noun from the verb 'konvertieren' (to convert). The ending '-sion' is typical for nouns derived from verbs ending in '-tieren'. It describes the process or result of converting.
Er hat lange überlegt, bevor er zum Buddhismus konvertierte.
He thought about it for a long time before he converted to Buddhism.
The meaning of 'Konversion' (conversion) becomes clear through context. Words like 'Religion' (religion) or 'Glaube' (faith) point to religious conversion. Terms like 'Gebäude' (building), 'Fläche' (area/land), or 'Industrie' (industry) indicate repurposing. In connection with 'Webseite' (website) or 'Kunde' (customer), the marketing meaning is intended.
Die Konversion seiner politischen Ansichten überraschte viele.
The conversion of his political views surprised many people.
In a religious context, 'Konversion' (conversion) is often used with the preposition 'zu' (to) and the new religion: 'die Konversion zum Islam' (conversion to Islam). A typical verb used with it is 'vollziehen' (to carry out/undergo).
Ihre Familie akzeptierte ihre Konversion zu einem anderen Glauben.
Her family accepted her conversion to another faith.
When converting land or buildings, people often speak of the 'Konversion von' (conversion of) something 'in' (into) something else. Common objects are 'Industriebrachen' (brownfield sites), 'Militärgelände' (military sites), or 'Gebäude' (buildings).
Die Konversion von Büroflächen in Wohnraum ist eine aktuelle städtische Herausforderung.
The conversion of office space into housing is a current urban challenge.
This meaning is specialized marketing terminology. Here the 'Konversionsrate' (conversion rate) is often used as a key metric. Typical verbs are 'steigern' (to increase), 'messen' (to measure), or 'optimieren' (to optimize).
Mit einem einfacheren Anmeldeformular konnten wir die Konversion um 20 Prozent steigern.
With a simpler registration form, we were able to increase conversion by 20 percent.
implementation / conversion
'die Umsetzung' and 'die Konversion' can both appear in projects where something changes in practical terms. 'Umsetzung' means the general step from plan to practice. 'Konversion' is more specific: something is converted into another form or for another purpose, for example an old building or a piece of land. So the words are only closely related in certain situations. For a plan in general, you say 'Umsetzung'. When the main point is a change of use or a conversion, 'Konversion' is more precise.

Die Konversion der alten Fabrik in Wohnungen kostet viel Geld.
The conversion of the old factory into apartments costs a lot of money.
Die Umsetzung des Bauplans verzögert sich wegen neuer Regeln.
The implementation of the construction plan is being delayed because of new rules.