Answer is simple.
Everything fully automated.
No manual edit of configuration files. Usually for start instance of Odoo you must:
install and configure postgresql,
install all requirements,
install and and configure Odoo,
install and configure any frontend like HAProxy or nginx
Is it simple? Yes.
But for professional system administrator. Not for businessman.
We are professionals. But even we do nothing manually, because everything is fully automated. We know that it is necessary that the ode worked without failures, We know and we did.
We have launched 1000+ instances of Odoo/OpenERP for different businesses!
Join us and make your company a better place.