When China’s Alibaba purchased a 51% stake in Lazada about two years ago, it was betting on one of the few online shopping giants in Southeast Asia. Now the region is becoming far more competitive, prompting the e-commerce juggernaut to get even more involved, announcing today an additional investment of $2 billion in Lazada. Last year Alibaba led a $1.1 billion investment in Indonesia’s unicorn startup Tokopedia. Founded by William Tanuwijaya and Leontinus Alpha Edison in 2009, Tokopedia has been dubbed Indonesia’s Taobao – Alibaba’s consumer-to-consumer marketplace. All eyes are now on Amazon.com Inc.’s regional ambitions, as it looks for new growth outside of Japan and India, its two main markets in the hemisphere, according to Bloomberg.