# ADR-025: Internationalization (i18n) and Localization (l10n) Strategy

**Date**: 2025-12-12

**Status**: Proposed

## Context

The application currently displays all text, dates, and currency in a single format (likely English/USD). To expand its user base, it will need to support multiple languages and regional formats.

## Decision

We will adopt a framework for internationalization. For the frontend, this will involve a library like **`react-i18next`** to manage translation files (e.g., `en.json`, `es.json`). For the backend, it will define how to handle locale-specific data (like currency formatting in API responses) and store user language preferences.

## Consequences

**Positive**: Lays the architectural groundwork for future global expansion. Improves user experience for non-English speakers.
**Negative**: Requires significant effort to translate all user-facing text. Adds complexity to both frontend and backend code for handling locale-specific data.