What is the eCommerce? why eCommerce is very important for Retailers?

Explain What is the eCommerce? and why eCommerce is very important for Retailers.
What is the eCommerce? why eCommerce is very important for Retailers?
What is the eCommerce? why eCommerce is very important for Retailers?
What is the eCommerce? why eCommerce is very important for Retailers?

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