Your eSIM connects to Orange, the largest mobile network in Ivory Coast. There are three main carriers in the country. Orange, MTN, and Moov. Of the three, Orange has the most towers and the best reach once you leave the big cities.
This matters for travelers. A plan that works great in Abidjan but dies on the road to Yamoussoukro is not much use. Orange gives you the steadiest signal across both city and countryside, which is why MegaEsim uses it for this plan.