Binny till now was the Chief Operating Officer (COO). Sachin along with Binny launched Flipkart in 2007.
In a statement, Flipkart said Sachin "will provide strategic direction for Flipkart, mentor the senior leadership and look for new investment opportunities."
"Binny as the Chief Executive Officer will now be responsible for operationally driving the company and be accountable for Flipkart's overall performance.
"All the business areas - Commerce, Ekart and Myntra will now report to Binny. All corporate functions including human resources, finance, legal, corporate communications and corporate development will also report to Binny," the statement said.
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Binny Bansal, as the COO, was till now responsible for overseeing the company's critical supply chain and logistics business.
"Today, we are in a very strong leadership position with over 60 per cent market share of the m-commerce market, 50 million customers and clear leadership in smartphones and fashion.
"The journey ahead is equally exciting and challenging. Flipkart has all the necessary ingredients of brilliant talent and great technology to win this next phase as well," Binny Bansal said the statement.
He will also continue his role as the Chairman of Myntra, the online fashion retail business acquired by Flipkart for a reported USD 370 million, in 2014.
The company will continue to build world-class customer experience, expand supply chain infrastructure to reach all parts of India, drive innovations in mobile commerce and bring in disruptive technologies, Binny Bansal said.
"E-commerce in India is going through its most exciting phase and Flipkart has played a pioneering role in shaping this very remarkable journey. We believe Flipkart can play a transformational role in improving commerce in India and improve the quality of lives of millions of people across the farthest corners of the country," Sachin Bansal said.