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Why Containers Do Not Replace Virtual Machines

Containers and virtual machines are often misunderstood as alternatives.

They are not.

They operate at different layers and solve different problems.

Virtual Machines

Virtual machines provide hardware-level isolation.

They are responsible for:

Security boundaries

Multi-tenant isolation

Operating system separation

Cloud infrastructure is built on virtual machines.

Containers

Containers package applications and their dependencies.

They provide:

Environment consistency

Fast startup times

Portable application delivery

Containers depend on the host operating system and infrastructure.

How They Fit Together

In real-world systems:

Virtual machines form the base layer

Containers run on top of virtual machines

Containers do not replace virtual machines.
They complement them.

At InfraForgeLabs – DevOpsMind, this layered model is taught as a core DevOps concept.

At InfraForgeLabs – InfraForge, infrastructure templates are generated assuming this real-world architecture.

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