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Quick Definition
A dedicated host is a physical server fully allocated to a single customer, rather than shared. It supports compliance, licensing, and isolation requirements but costs more than shared instances, so it is used selectively where regulatory or licensing needs justify the premium
A dedicated host is a whole physical server reserved for your exclusive use. No other customer's workloads share the hardware, and you control how your virtual machines are placed on it.
Companies choose dedicated hosts for two reasons: compliance regimes that demand physical isolation, and software licenses that are priced per physical socket or core, which can make consolidating licensed workloads onto owned hardware dramatically cheaper. The trade-off is cost and responsibility: you pay for the whole box whether you fill it or not, so utilization becomes your problem.
Example. An enterprise runs database software licensed per physical core. Packing those databases onto a few dedicated hosts, instead of scattered virtual machines, cuts the license count enough to pay for the hosts several times over.
Dedicated hosts are a niche tool with sharp economics. Model utilization honestly, the way the Cloud Cost Management guide recommends for any fixed-capacity purchase.
A dedicated instance guarantees your VM runs on hardware no one else shares; a dedicated host gives you the entire server and control over VM placement on it.
Mainly when per-socket or per-core software licensing dominates, and consolidation reduces license counts.
Paying for an underfilled server. Dedicated hosts only make sense at consistently high utilization.