I want to start a project and first I check the technical feasibility. I want to implement a login area. There a lot of people can registrate and have the possiblity to work with an interactive mindmap. The data should be evaluated (inputs, tracking) in Salesforce. After the registration a lead should be created automatically. It’s not required that everybody who want’s to registrate have to posess an own licence. Is it only possible with a third party system (external web portal), which can communicate with Salesforce with the REST API or exists another way to solve the problem with minimal effort? Thanks for your help!