Google My Business Optimization 2018 Edition {Research by Ranking Factors}

On-Page SEO:
  GMB Post
  Photos
  Business Hours
  Category of Business
  Business Description
  Attributes
  Messaging

  Website

Some Tips For Optimation:
  Map Embed on Web 2.0
  Map Embed on Site Builder websites
  Map Embed on Google Sheets, Slides, Docs
Off-Page SEO