An online will is a legally valid estate planning document created through a guided, step-by-step process on a website or platform, rather than by a lawyer. These services use questionnaires to help users define beneficiaries, executors, and guardians for minor children, and distribute assets like property and investments. While offering convenience and cost-effectiveness, the process requires users to provide accurate information and ensure the final document is properly signed and witnessed to be legally binding and compliant with local laws.