# WoW64

> subsystem of the Windows operating system

**Wikidata**: [Q431013](https://www.wikidata.org/wiki/Q431013)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/WoW64)  
**Source**: https://4ort.xyz/entity/wow64

## Summary
WoW64 is a subsystem of the Microsoft Windows operating system designed to function as a compatibility layer. It is classified as software that enables the operating system to manage specific hardware resources and software environments. The subsystem is also known by the aliases SysWoW64 and 64.

## Key Facts
*   **Primary Function:** Serves as a compatibility layer within the Windows operating system.
*   **Parent System:** A core component and subsystem of Microsoft Windows, which was initially released on November 20, 1985.
*   **Aliases:** Also referred to as "SysWoW64" and "64."
*   **Classification:** Defined as a piece of software and a subsystem.
*   **Global Reach:** Documented across Wikipedia in at least 10 languages, including English, German, Spanish, Japanese, and Korean.
*   **Knowledge Base ID:** Identified by the Freebase ID `/m/04mcg6`.

## FAQs
### Q: What is the specific role of WoW64?
A: WoW64 acts as a compatibility layer and subsystem for the Microsoft Windows operating system. It functions as software that manages how the operating system handles specific resources and processes.

### Q: What are the other names for WoW64?
A: The subsystem is also known by the aliases "SysWoW64" and "64."

### Q: Is WoW64 considered a standalone product?
A: No, WoW64 is not a standalone product; it is an integral subsystem and component of the Microsoft Windows operating system family.

## Why It Matters
WoW64 matters because it serves as a critical bridge within the architecture of Microsoft Windows. By functioning as a compatibility layer, it ensures that the operating system can effectively manage different software environments, maintaining the stability and utility of the Windows ecosystem. Without such subsystems, the operating system would struggle to manage the diverse requirements of software applications, leading to a fragmented user experience. Its presence highlights the complex engineering required to maintain the longevity and backward compatibility of the world's most widely used operating system family, which has been in development since 1985.

## Notable For
*   **Structural Role:** Being a distinct subsystem within the broader Microsoft Windows architecture.
*   **Functionality:** Acting as a designated compatibility layer, a critical feature for operating system flexibility.
*   **Nomenclature:** Being recognized under multiple identifiers, including "SysWoW64" and "64."
*   **Integration:** Serving as a specific instance of software deeply integrated into the OS.

## Body
### Classification and Hierarchy
WoW64 is fundamentally defined by its place within the software hierarchy. It is categorized as an **instance of software** and is functionally a **subclass of an operating system**. More specifically, it is designated as a **subsystem** of the **Microsoft Windows** family. This family, developed by Microsoft, has been a cornerstone of the computing world since its inception on November 20, 1985.

### Functionality and Design
The primary utility of WoW64 is defined by its use as a **compatibility layer**. This designation implies that the software serves as an intermediary that allows the operating system to support specific functions or applications that may not be natively supported by the core kernel or hardware architecture in the same way.

### Identifiers and Aliases
In technical documentation and knowledge bases, WoW64 is associated with specific identifiers and alternative names:
*   **Aliases:** It is frequently referred to as **SysWoW64** or simply **64**.
*   **Freebase ID:** The entity is tracked under the ID `/m/04mcg6`.
*   **Wikipedia Presence:** The entity has a significant global footprint, with sitelinks across 15 Wikipedia language editions, including Danish, German, English, Spanish, Finnish, Italian, Japanese, Korean, Polish, and Portuguese.

## References

1. Freebase Data Dumps. 2013