An ombudsman is a kind of impartial arbitrator. Companies can outsource the processing of information if internal resources do not exist. Ombudspersons are often lawyers who are sworn to secrecy. This allows whistleblowers to submit their information without having to fear reprisals.
In summary, an ombudsperson is there to help uncover compliance violations, malpractice and misconduct, ensure effective handling and prevention and minimise the company's liability risks. An ombudsperson is often only able to be called upon as a neutral consultant.
In contrast to a digital whistleblowing solution, ombudspersons are at a disadvantage in that they are not available anywhere and everywhere in all languages. Furthermore, there are no guarantees that the reports or documents could be searched in the event of an official investigation.
See JUVE Verlag at: https://www.juve.de/nachrichten/verfahren/2016/11/whistleblower-truegerischer-schutz-durch-ombudsleute-es-darf-beschlagnahmt-werden (accessed on 03.06.2020)