1. Industry - B2B, SaaS, ecommerce, local, etc
  2. Niche industry - coffee shops, crossfit gyms, lawyers, home supply stores (ecom), etc.
  3. Specialized service - Content marketing, link building, international SEO
  4. Productized service - Sprints, Website Quality Audit, DWY > DFY, Service as a Software (Design Pickle)