Answer: Amazon, Jumia
Step-by-step explanation:
Online to offline strategy could be described as having the products displayed on the sellers site with their prices attached to them, the customer orders and it's delivered to them, payment is done either online or on delivery. This makes it easier for the customers as they don't have to bother or stress themselves with visiting the store always. They are many firms doing this now, examples are Amazon, Jumia etc
Amazon promoted this pattern of business more than others before others picked interest in them. They are still among the best for doing it