Airalo is a service that provides eSIMs (embedded SIMs) for travelers, offering a convenient and efficient way to get mobile data connectivity in various countries around the world. An eSIM is a digital SIM that allows you to activate a cellular plan without the need for a physical SIM card. With Airalo, users can download an eSIM directly to their compatible smartphone, tablet, or other device, enabling them to use data services at local rates without the need to purchase a physical SIM card.