It honestly depends a lot of your network and asset types.
Presuming you are only scanning Windows assets, when simplified, it comes down to the following:
- IP Range scanning scans an IP range based on a schedule.
- AD Domain scanning scans assets which have logged onto the domain controller in the past X amount of minutes (to be configured).
Another option worth mentioning is LsPush. When used in a scheduled task or GPO it scans the entire asset when a user logs onto the asset.
Again simplified, LsPush will give you the quickest response time when configured to initiated a scan as soon as a user logs onto the asset.
I would however recommend going through the following knowledgebase articles to get a full understanding of the scanning targets to decide which scanning targets best suits your situation and environment.
Scanning with an IP range scanning target: https://www.lansweeper.com/kb/110/scanning-with-ip-address-range-scanning.html
Scanning with an Active Directory Domain scanning target: https://www.lansweeper.com/kb/130/scanning-with-active-scanning.html
Scanning Windows with LsPush: https://www.lansweeper.com/kb/24/how-to-scan-with-LsPush.html