An eSIM works as a SIM card. You will get a phone number from your carrier, and you will be able to connect to a mobile network and navigate through the internet. Besides, if it is necessary, you can change your carrier because the information on the eSIM can be rewritten.
One of the best options to avoid spending too much money on roaming is to purchase an eSIM. They are affordable and easy to use, so you can save some money on data roaming, and spend it on experiences in Europe.
UPeSIM was invited to BFM Business to present the UPeSIM application
UPeSIM: the iPhone and Android application available - App Store and Google Play