Centralizing your API logic by moving Axios calls out of your React components leads to cleaner, more maintainable code. Instead of writing Axios requests directly inside your components, you can create a separate api.js file where all your API functions live. This approach allows you to import and use these functions in any component that needs them, making your codebase more organized and easier to manage.

For example, you might create an api.js file with the following content:

// api.js
import axios from "axios";

const API_BASE_URL = "https://api.example.com";

// Fetch a list of users
export function fetchUsers() {
  return axios.get(`${API_BASE_URL}/users`);
}

// Add a new user
export function addUser(userData) {
  return axios.post(`${API_BASE_URL}/users`, userData);
}

// Update a user
export function updateUser(userId, updatedData) {
  return axios.put(`${API_BASE_URL}/users/${userId}`, updatedData);
}

// Delete a user
export function deleteUser(userId) {
  return axios.delete(`${API_BASE_URL}/users/${userId}`);
}

With this setup, your React components can import just the functions they need:

// UserList.js
import React, { useEffect, useState } from "react";
import { fetchUsers } from "./api";

function UserList() {
  const [users, setUsers] = useState([]);
  
  useEffect(() => {
    fetchUsers()
      .then(response => setUsers(response.data))
      .catch(error => console.error(error));
  }, []);
  
  return (
    <ul>
      {users.map(user => <li key={user.id}>{user.name}</li>)}
    </ul>
  );
}

export default UserList;

By abstracting your API logic into a dedicated file, you achieve several important benefits. First, your components become focused only on UI concerns, making them easier to read and maintain. Second, your API functions are reusable across multiple components, so you do not have to duplicate code. Third, testing becomes simpler because you can mock the API functions without dealing with Axios directly in your component tests. Finally, if your API endpoints or logic change, you only need to update your api.js file, not every component that uses those requests.