---
layout: docs
page_title: Configuration
sidebar_title: Host Set
description: |-
  The annatomy of a Boundary host set
---

# Host Set

A host set is a resource which provides a subset of Hosts from the set of Hosts of the Host Catalog it belongs to. A Host Set belongs to one and only one Host Catalog. A Host Set can contain zero or more Hosts. A Host Set can be contained by zero or more Targets. Host Set is abstract. A Host Set is deleted when the Host Catalog it belongs to is deleted. The lifecycle of a Host Set is not tied to the lifecycle of any Targets or Hosts.

## Attributes