10x

```python
# This script implements a basic REST API using Flask in Python.

from flask import Flask, jsonify, request

app = Flask(__name__)

# Sample data
users = [{ 'id': 1, 'name': 'Alice' }, { 'id': 2, 'name': 'Bob' }]

@app.route('/users', methods=['GET'])
def get_users():
    """Fetch all users"""
    return jsonify(users)

@app.route('/users/<int:user_id>', methods=['GET'])
def get_user(user_id):
    """Fetch a user by ID"""
    user = next((user for user in users if user['id'] == user_id), None)
    return jsonify(user) if user else ('Not Found', 404)

if __name__ == '__main__':
    app.run(debug=True)
```

This code snippet creates a simple REST API using Flask that allows fetching all users or a specific user by ID. To integrate this into a larger project, you can connect it to a database for dynamic data retrieval, implement authentication for security, and deploy it using a containerization tool like Docker for scalability.