Customer engagement is a business communication connection between an external stakeholder (consumer) and an organization (company or brand ) through various channels of correspondence. This connection can be a reaction, interaction, effect or overall customer experience , which takes place online and offline. The term can also be used to define customer-to-customer correspondence regarding a communication, product, service or brand. However, the latter dissemination originates from a business-to-consumer interaction resonated at a subconscious level.

Information privacy , also known as data privacy or data protection , is the relationship between the collection and dissemination of data , technology , the public expectation of privacy , legal and political issues surrounding them.

Consumer privacy is a form of information privacy concerned with the legal and political issues arising from the interaction of the public's expectation of privacy with the collection and dissemination of data by businesses or merchants . Consumer privacy concerns date back to the first commercial couriers and bankers who enforced strong measures to protect customer privacy. In modern times, the ethical codes of most professions specify measures to protect customer privacy, including medical privacy , client confidentiality , and national security . Since most organizations have a competitive incentive to retain exclusive access to customer data, and since customer trust is usually a priority, many companies adopt security engineering measures to protect customer privacy.