Amazon founder Jeff Bezos announced Tuesday that he would step aside later this year as chief executive of the company he built from a startup into one of the world's most valuable firms. He will be replaced by Andy Jassy, who spearheaded Amazon's cloud computing venture, Amazon Web Services, turning it into a multibillion-dollar business, reports CNBC.
Although Mr Jassy has not been in the public eye like Jeff Bezos, he has been an integral part of Amazon since he joined the company in 1997.
A Twitter thread going viral online unpacks the crucial part he played in the success of Amazon Web Services, and his role as Jeff Bezos' "shadow".
"In 2003, Jeff Bezos invited his former chief-of-staff to a corporate retreat at his home," wrote Twitter user Ankith Harathi. "That former chief-of-staff is now worth $400M. Oh, and he's Amazon's new CEO."
Before being appointed the head of AWS, Mr Jassy was chosen for the coveted position of "Technical Assistant" to work with founder and CEO Jeff Bezos.
"At the time, we called it a 'shadow role.' And it really was like being Jeff's shadow-I participated in all of his meetings, including his one-on-ones," Mr Jassy told CRN back in 2015.
He spend 18 months shadowing Mr Bezos - learning "directly from the boss himself", as Mr Harathi put it in his Twitter thread.
As he followed Mr Bezos around, Andy Jassy identified several inefficiencies in how teams at Amazon worked together.
According to The New York Times, Mr Bezos had grown frustrated with Amazon's software development teams that were taking longer than anticipated to complete projects.
"They were spending a lot of $$$ attracting the absolute best and brightest. Something was wrong. Bezos asked Jassy to go fix it," wrote Mr Harathi.
Mr Jassy found that several projects were delayed because product teams were spending too much time "setting up storage, compute and databases".
Mr Jassy convinced Mr Bezos to "standardized backend requirements" and invest in infrastructure.
This fact was seconded by former Amazon executive Dan Rose, who wrote on Twitter: "During his two-year run in Jeff's office, Andy identified a bunch of inefficiencies in how teams worked together and convinced Jeff to invest in infrastructure to reduce dependencies. Amazon later externalized some of those APIs and Andy became the founder and CEO of AWS."
AWS is today one of Amazon's most profitable arms. In a memo sent to employees earlier this week, Mr Jassy said he would always be "passionate and connected to AWS."
He also spoke about the things he learned from Mr Bezos - which included "criticality of hiring and developing great people", the "importance of inventing" and "how to obsess over customers".
For his part, Mr Bezos has said that Andy Jassy has his full confidence.
"Andy is well known inside the company and has been at Amazon almost as long as I have. He will be an outstanding leader, and he has my full confidence," he wrote in a letter to employees.
Jeff Bezos Praises Donald Trump's "Grace And Courage" After Assassination Bid Jeff Bezos To Sell $5 Billion Amazon Shares After Stock Hits Record High "Time Is Very Important": Jeff Bezos On Morning Routine And Proper Sleep Travel Influencer Aanvi Kamdar Dies After Falling Off A Waterfall Near Mumbai Amid Huge Row, Karnataka Pauses Bill For Reservation In Private Sector Firms "Assassination Attempt Has Sealed The Election": Trump's Close Aide Biden Says Could Drop Election Bid If "Medical Condition" Emerged Russia Says It's Ready To Work With Any US Leader 3 People Die After Drowning In Lake In Telangana: Cops Track Latest News Live on NDTV.com and get news updates from India and around the world.