Prototyping and Implementation Strategies in System Analysis and Design

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$$ A client requests a prototype of an e$-$commerce system to demonstrate key functionalities before full$-$scale implementation.

$$ Sketch a low$-$fidelity prototype for the "Product Search" and "Checkout" modules.

$$ Based on this prototype, recommend a suitable implementation strategy $($direct cutover, parallel, or phased$)$ and justify your choice.