"Increasing internet and mobile penetration, growing acceptability of online payments and favourable demographics have provided...The unique opportunity to companies to connect with their customers," said the study.
While the buying trends during 2015 witnessed a significant upward movement due to aggressive online discounts, rising fuel prices and wider and abundant choice will hit the e-commerce industry in 2016, it pointed out.
On the other hand, mobile commerce (m-commerce) is growing rapidly as a stable and secure supplement to the e-commerce industry.
The paper reveals that Mumbai ranks first in online shopping followed by Delhi, Ahmedabad, Bengaluru and Kolkata.
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"In 2015, 78 per cent of shopping queries were made through mobile devices, compared to 46 per cent in 2013," Assocham Secretary General D S Rawat said.
In 2015, the highest growth rate was seen in the apparel segment, almost 69.5 per cent over last year, followed by electronic items, up 62 per cent, baby care products, up 53 per cent, beauty and personal care products at 52 per cent and home furnishings at 49 per cent.
Moreover, almost 45 per cent online shoppers reportedly preferred cash on delivery over credit cards (16 per cent) and debit cards (21 per cent). Only 10 per cent opted for internet banking and a scanty 7 per cent preferred cash cards, mobile wallets, and other such modes of payment.
The 18-25 years of age group has been the fastest growing age segment online with user growth being contributed by both male and female segments.
The products that were sold most in 2015 include mobile phones, ipad and accessories, MP3 players, digital cameras and jewellery, among others.