Business moguls like Bill Gates and Jeff Bezos have been married for over 20 years — here are the keys to their success

• Marriage is hard work for anyone.

• But some of the biggest names in business are enjoying very long marriages with their partners.

• Business Insider looked into each marriage to get a sense of the strategies each couple uses to make things work.

Marriage takes a lot of work.

So how do some of the biggest names in business manage to juggle their relationships while also running huge companies and organizations?

The answer is, it depends. No two relationships are exactly alike, and different pairs may employ different strategies in order to achieve marital bliss.

Still, a number of business moguls have seemingly got things figured out. Top businesspeople like Jeff Bezos and Bill Gates have both been married for over 20 years.

Here's a look at a few relationship strategies employed by some of the biggest names in business.

SEE ALSO: A look inside the marriage of world's richest couple, Jeff and MacKenzie Bezos — who met at work, were engaged in 3 months, and own more land than almost anyone else in America

Equality and a strong sense of partnership are important to any marriage. But when Bill and Melinda Gates first started dating, they weren't on an even playing field. He was the CEO and founder of Microsoft, while she was a product manager at the company. Melinda later said her relationship with her husband of 23 years has changed over time.

"We've had to change to really be coequals," she told Fortune. "It's not something that immediately happens overnight, but we're both committed to it." Today, the couple even runs their namesake powerhouse philanthropic organization together.

Source: Business Insider, Fortune, Business Insider

Some analysts believe Amazon is on track to become the first trillion dollar company in the world. However, Amazon founder Jeff Bezos and his novelist wife MacKenzie are what family friend Danny Hillis called "such a normal, close-knit family, it's almost abnormal," according to Vogue.