E-health, or electronic health, has become a crucial part of healthcare in the technological era we live in today. It refers to the use of technology and digital tools to improve healthcare services and access to medical information. There are several synonyms for the term "e-health" that are often used interchangeably, including telemedicine, telehealth, m-health, digital health, and virtual health. All of these terms relate to the use of digital technologies to support patients, providers, and healthcare systems in one way or another, from remote consultations to wearable health monitors. Regardless of the synonym used, the goal of e-health is to enable patients to have easy, convenient, and efficient access to healthcare services, while also improving the overall quality of care.