Different businesses have different e-commerce transaction types, but there are some common ones.
One common e-commerce transaction type is the sale of physical goods. This could be anything from clothes toelectronics to books. Physical goods are often sold through online marketplaces like Amazon, or through retailers' websites.
Another common type of e-commerce transaction is the sale of digital goods. This could include anything from e-books to software to online courses. Digital goods are often sold through specialized marketplaces or directly through the creators' websites.
A third type of e-commerce transaction is the provision of services. This could be anything from consulting services to online personal training. Services are often sold through online marketplaces or directly through the service providers' websites.
There are many other types of e-commerce transactions, but these are three of the most common.