It's an accessible way to generate e-rechnung, e-invoices. Free to start for small companies. Save time and cost for small companies to start operating in Germany. Allows Api integration with api credit base plans. Cheaper and faster to start using. Justi sign up and get the free starting plan. An Api key is given after plan is selected. Users can also generate the invoices via website https://lp-e-rechnung.web.app/