My Maps Pro used to be the paid version of My Maps. It was previously called Maps Engine, while the free version was called Maps Engine Lite. My Maps Pro had less restrictive limitations than My Maps and it was better suited for companies. “Both My Maps and My Maps Pro give you the power to create custom maps that you can share and publish online. While My Maps is perfect for creating and sharing personal maps, such as places to visit on vacation or your favorite hiking trails, Pro is designed for business or advanced personal use,” explained Google.
Now My Maps Pro features are available for free in My Maps: