One of the settings that BizTalk administrators can modify in the BizTalk Settings Dashboard. Examples include host tracking, and properties related to resource-based throttling, rate-based throttling, and orchestration throttling. Host-level settings tweak the way all instances of host behave in a given deployment. For example, if for Host1 the setting Max. engine threads is changed to 200, all instances of Host1 will work with a maximum of 200 engine threads.