Southeast Asia is now the world’s third largest region for internet users — with more people online than the entire U.S. population — and internet is having a bigger impact on the region than originally thought, according to a new report co-authored by Google.

China and India typically dominate the conversation when looking at emerging economies in Asia, but Southeast Asia is rapidly being acknowledged as a market where the internet is changing daily behaviors and creating new opportunities. A lack of data has traditionally made it difficult to pinpoint that potential but Google and Singaporean sovereign fund Temasek today released an update to their highly referenced 2015 ‘e-Conomy SEA’ report — the main takeaway is that growth has exceeded their initial expectations.
https://techcrunch.com/2017/12/12/google-southeast-asias-internet-economy-is-growing-faster-than-expected/

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330 million internet users accelerating the growth of Southeast Asia's internet economy
With hundreds of millions of Southeast Asians coming online, we should pay attention to the opportunities in the region’s dynamic internet economy. In last year’s “e-Conomy 2025 Southeast Asia” report, Google and Temasek examined the incredible growth in Southeast Asia’s internet economy. It turns out that Southeast Asia’s internet economy growth has exceeded expectations. The region’s internet economy will reach $50 billion in 2017, outpacing earlier growth expectations by 35 percent. In the “e-Conomy Southeast Asia Spotlight 2017” report, we’ve found that the region is well on track to realizing a $200 billion internet economy by 2025.