Google+ is the social media website and provided by google for free. By creating a page of business and profile helps us to create the branding and visitors. Increase the followers by following them and join the community to get and share the information. Update the regular post to keep engage.
Google + is one types of social media sites were you can create community in that you can add related people and post good content which help to get good traffic on Website
Google+ is helpful interms of SEO because with the hep of Google+ page, our website/company receives a lot of traffic, increases the brand awareness which will result in the improvement of website rank on search engine.