On-premises infrastructure places an organization’s servers and key network devices inside facilities it owns or controls. The organization purchases the equipment and provides the space, power, cooling, and physical security, retaining complete control of the IT environment. section 17.3 section 17.4
Distinguish on-premises infrastructure from nearby deployment approaches:
- Colocation places company-owned equipment in a third-party data center, which supplies space, power, cooling, and physical security. section 17.3
- Cloud computing provides on-demand access to shared computing resources over a network as an alternative to on-premises and colocation setups. section 17.4
Figure 17.10 Two customers (Enterprise A and Enterprise B) house their servers in a colocation data center. They connect their networks in the data center, allowing them to share resources.
Use the colocation diagram to contrast third-party facility hosting with infrastructure kept inside an organization’s own facilities. section 17.3
