The MapQuest API provides an excellent set of tools and resources that empower developers to effectively map the world. Being an essential tool for geolocation-based services, this API offers a wide range of features including mapping, routing, geocoding, search, traffic data, and much more. All necessary information and guidance on how to utilize these tools are comprehensively laid out in their detailed documentation located at MapQuest Developer Guide.

Using the MapQuest API not only streamlines the process of integrating mapping features but also brings several other advantages that make it a top choice for developers to include:

• Extensive geocoding capabilities, including batch geocoding and reverse geocoding.
• Real-time traffic data that aids in creating more efficient routing.
• Advanced search capabilities that provide localized search results.
• Numerous customization options for maps providing a unique user experience.
• Enhanced routing options that consider real-time conditions and offer alternate routes.

A basic JavaScript example to call this API would look like the following:

let url = 'http://www.mapquestapi.com/geocoding/v1/address?key=YOUR_KEY_HERE&location=Washington,DC'
fetch(url)
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.log('Error:', error));

Please replace 'YOUR_KEY_HERE' with your actual API key which can be obtained by signing up on their official website.