The WebAssembly Component Model is a specification for composing WebAssembly modules across language boundaries, treating each module as a component that exposes a typed interface rather than a raw binary. Under this model, a Rust module and a Python module can interoperate through a language-neutral interface definition, with the runtime handling memory marshalling, type translation, and sandbox enforcement automatically. This is not merely polyglot programming; it is a fundamental shift in how software is packaged, distributed, and composed — from the monolithic binary to the networked component. The Component Model makes explicit what traditional linking hides: that every software boundary is a theory of trust, and that making those boundaries visible and enforceable is the precondition for building systems that can evolve without collapsing under the weight of their own dependencies.