NAICS stands for North American Industry Classification System.

It is a standardized system used in Canada, Mexico, and the United States to classify businesses.

NAICS codes are six-digit codes that identify the primary activity of a business.

It is used by government agencies, researchers, and businesses to collect and analyze data on economic activity.

They are also used by businesses to identify competitors and potential partners.

It depends on a variety of factors, such as the nature of the products or services being sold, the size of the business, and the primary mode of operation.

The NAICS code for eCommerce can vary depending on the specific type of eCommerce business. 

Here are a few examples of NAICS codes that may be relevant to eCommerce:

1. Electronic Shopping and Mail-Order Houses

NAICS code 4541

This code is used for businesses that sell goods or services online or through mail-order catalogs.

2. Electronic Retailing

NAICS code 454111

This code is used for businesses that sell goods directly to consumers through electronic channels, such as websites or mobile apps.

3. Online Marketplaces

NAICS code 454390

This code is used for buyers and sellers to engage in commercial transactions online.

4. Digital Advertising

NAICS code 541810

This code is used for online display ads or search engine marketing, to eCommerce businesses.