You can give customers the right information at the right time, including driving directions to your business in Maps, your hours of operations in Search or a phone number they can click to call you on their mobile phone.
You can manage your business info using GMB, share updates with customers and get insights on how people find your business, all from a single dashboard. They basically added separate elements that are used to manage and track your Google presence and rolled them into a simple interface.
Take some time to setup and complete your Google My Business profile. Download the Google My Business app and get familiar with it. It is a simple tool to use to stay connected to your audience.