It doesn't matter if your company is big or small, a bootstrapped startup or a Fortune 500 firm -- you need SEO to maximize your e-commerce website's profitability. SEO for an E-Commerce Site is no longer optional.
As an eCommerce marketer SEO offers you the ability to put your products in front of prospective buyers at the exact moment they are proactively looking for information about those products. Few other tactics offer such precise targeting and timing - it's truly a win-win, giving buyers and sellers what they want.
Also, you can check the 4 best E-commerce platforms for Online Business.