'Amazon India's progress is energizing,' says founder Jeff Bezos in an open letter

The letter began with Bezos thanking the customers and stating, "We launched Amazon.in on June 5, 2013, with a vision to transform the way India buys and sells. On our fifth anniversary in India, I want to say thank you for your support and for making Amazon.in the most visited shopping site in India for the last two year."

The move may be seen as a retaliation to growing competition from India's own e-commerce unicorn Flipkart, which was recently acquired by Walmart. According to the latest stats from emarketer, Amazon and Flipkart will help propel e-commerce growth by 30% by the end of 2018.

Amazon continued to expand its inventory post-launch by rolling out Amazon Prime subscription, Kindle Book, Amazon Prime Video, Alexa voice assistant, and Amazon Music in India.

Bezos further mentioned about how Alexa was introduced in December last year, that is, 2017 and already offers more than 15,000 skills and features.

"From listening to music, playing bhajans, voice shopping, or even ordering a cab, Alexa can do everything. There are tens of thousands of third-party developers expanding Alexa's capabilities for our India customers," he wrote.

Jeff further shed light on Amazon's other achievements like how Amazon ships packages from more than 50 fulfillment locations in 13 states.

"Our teams are becoming part of many local communities - from providing lighting for rural homes to assisting with local environmental projects," he added.