- Google Maps Integration:
- Integrate Google Maps using the Google Maps JavaScript API. Obtain an API key from the Google Cloud Console.
 
 - Create a Controller:
- Develop an OpenCart controller to handle Ajax requests for fetching product data.
 
 - Ajax Request:
- Use JavaScript/jQuery to make an Ajax request to the controller. Fetch product data for display on the map.
 
 - Controller Logic:
- In the controller, handle the Ajax request and retrieve relevant product data from the database.
 
 - Update the Map:
- Update the map markers or clusters based on the fetched product information.
 
 - Display Product Information:
- Show product details in a popup or info window when a user interacts with a marker.
 
 - Responsive Design:
- Ensure that the map and product listings are responsive to different screen sizes.
 
 - Testing:
- Thoroughly test the functionality to ensure correct updating of product listings when interacting with the map.