The question that often arises in online agreements on websites is whether the parties have actually agreed to the terms. In most contractual scenarios, the parties negotiate to find conditions that everyone finds acceptable. The signed treaty is the expression of this discussion. A binding agreement applies under national or federal laws. Such an agreement is considered “legally binding” under contract law. The terms and conditions of sale (CGV) are not legally imposed by law, but they are essential to the proper functioning of a website or application. This agreement contains the rules governing the use of your app or website and allows you to remove problematic users. The C-C becomes legally binding as a data protection declaration, as documents are often presented together. There must always be offer, acceptance, reflection, intent to create legal intentions and legal certainty. This can be best demonstrated in a written contract, but in many cases, if there are essential elements, a binding agreement will be established, whether or not there is something written. Another important element of a binding agreement is that both parties intend to have legal consequences.