ELI5: Explain Like I'm 5

Big Three (management consultancies)

Okay kiddo, so you know how sometimes when grown-ups have problems with their businesses, they need help figuring out what to do? That's where the big three management consultancies come in - they are like grown-up superheroes!

The big three are three really big companies that specialize in helping other companies solve their problems. The companies are called McKinsey & Company, Boston Consulting Group, and Bain & Company.

These superhero companies work with businesses to figure out what is working well and what needs to be improved. They do this by looking at a lot of information about the business, like how much money they make, what people are buying, and what the competition is doing.

Once they have all of this information, the big three use their super-smart brains and experience to come up with ideas for how the business can improve. For example, they might suggest that the business makes a new product, or that they try to sell more to a certain group of customers.

Overall, the big three help businesses make better decisions and become more successful. And that's why they are such important and powerful companies in the business world.