(Bloomberg) -- A few years after launching Grab Holdings Inc. in 2012, Anthony Tan got a piece of advice from Jack Ma. The co-founder of Alibaba Group Holding Ltd. told the entrepreneur that life is a tsunami. When you’re up on the wave, get ready for the crash, he said.In 2020, that all came to pass. The coronavirus sent cities across Southeast Asia into lockdown. Demand for ride-hailing, a key business, plunged. Then around December, its big plan to merge with arch rival Gojek collapsed.Tan wasn’t ready to give up on going public. Early this year, a connection introduced him to the Silicon Valley investor Brad Gerstner, the founder of Altimeter Capital Management. The two men, though from opposite sides of the world, had a lot in common. Both were Harvard Business School alumni, and both had eschewed easier paths in life to set up their own firms.Within about three months, the pair had announced the world’s biggest SPAC deal, which will see Grab list in the U.S. at a valuation of almost $40 billion.“A year ago, the world looked like it was going to end,” Tan, 39, said. “As an entrepreneur, you go through these crazy lows and crazy highs.”In an interview over Zoom, Tan recalls that after the initial introduction was made, Gerstner called some common friends to check him out. They included Rich Barton, the entrepreneur who leads Zillow Group Inc., and Uber Technologies Inc. Chief Executive Officer Dara Khosrowshahi, a Grab board member. Tan passed the test.Read more: Singapore’s Grab to List in U.S. in $40 Billion SPAC DealThe Grab-Altimeter special purpose acquisition company merger underscores the importance that’s placed on connections at the top of the technology world, and how graduating from universities like Harvard still helps to open doors.Gerstner has also invested in Coupang Inc., the Korean e-commerce giant founded by Bom Kim, who attended Harvard Business School around the same time as Tan before Kim dropped out. Grab rival Gojek was founded by Nadiem Makarim, a Harvard Business School classmate of Tan who’s now Indonesia’s education minister.So many billions were “created out of that class,” Gerstner, 49, said.Their three companies already have a combined valuation of about $130 billion, including almost $80 billion for Coupang after its initial public offering in March.“The world is shrinking,” Gerstner said. “Some of the most exciting leadership today is in regions like Southeast Asia.”Tan, born into a wealthy business family in Malaysia, got the inspiration to start Grab during his time at Harvard Business School from 2009 to 2011. He quit the family business, Tan Chong Motor Holdings Bhd. and started a taxi-hailing service known as MyTeksi with his Harvard classmate Tan Hooi Ling. Later Grab would expand into businesses including food delivery and online payments as it became a so-called super-app in Southeast Asia.Gerstner was in Harvard about a decade earlier, from 1999 to 2000. The American investor grew up in a small town in Indiana, admiring Warren Buffett. He started his career as a securities lawyer handling IPOs. After getting his MBA from Harvard, he joined the venture capital firm General Catalyst and later founded and sold three companies.In the depths of the global financial crisis in 2008, he set out on his own, establishing Altimeter Capital with just $3 million raised from friends and family. Today the firm, which invests in public and private technology companies, manages $15 billion. He’s backed tech players including Expedia Group Inc., Uber and software firm Snowflake Inc.Tan, a fixture at the World Economic Forum, has always stressed the importance of business partnerships. He spends much of his time networking, according to people who know him. On the eve of the merger announcement, Tan said he was out having dinner with a merchant partner.When in Indonesia, Tan abandons his signature black t-shirt and puts on a traditional batik shirt. He addresses conference guests in Indonesian. When visiting Tokyo to attend a SoftBank Group Corp. conference in 2019, he bowed deeply after SoftBank founder Masayoshi Son, his most early ardent supporter, introduced him as “a new superstar in the AI era.”SoftBank invested about $3 billion in Grab, but relations with Son cooled after the Japanese company put pressure on Grab to combine with Gojek, according to people familiar with the matter.Tan said his relationship with Son is still close. During the Zoom interview, he took out his phone and read aloud a text that he said he received from Son about the merger. “Anthony, thank you so much for the update. I’m really happy to hear that the IPO is going well,” Tan read.Gerstner, meanwhile, says he’s impressed by how Grab persevered through the pandemic -- and by its decision, like his own, to plough its own furrow.Grab “ultimately chose an independent path,” he said. “It’s simply one of the biggest internet companies doing one of the biggest IPOs of the year.”For more articles like this, please visit us at bloomberg.comSubscribe now to stay ahead with the most trusted business news source.©2021 Bloomberg L.P.