Asset explorer / Desktop Central Agent without Desktop Central Server?

Asset explorer / Desktop Central Agent without Desktop Central Server?

In the past we have maintained our assets using the Asset Explorer, in the release notes for the new SDP version we were told to use the Desktop Central Agent in the future. 

How can we use the Desktop Central Agent without installing the whole Desktop Central Server and buying licenses for it ?

What is the solution to maintain our assets in Service Desk Plus again ?

Installed SDP Version: 12.0 Build 12007

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