What does "Best in Breed" mean? Definition or Meaning

“Best in breed” refers to the very best in the business, in terms of individuals or companies.

For example…

Many luxury car brands would claim to be ‘best in breed’, as would luggage brands and computer manufacturers. When considering this idea, have a look at your competition to see who stands out. How can you improve your services to overtake them as ‘best in breed’?