A Robo-Advisor is a digital platform providing automated, algorithm-driven financial planning services with little to no human supervision. A typical Robo-Advisor asks questions about your financial situation and future goals through an online survey; it then uses the data to offer advice and automatically invests for you.
The best Robo-Advisors offers easy account setup, robust goal planning, account services, and portfolio management. Additionally, they offer security features, attentive customer service, comprehensive education, and low fees.
Source: https://www.investopedia.com/terms/r/roboadvisor-roboadviser.asp