Given the complexity of the functioning of the systems deployed and the systemic risks they present to society, providers of very large online platforms and of very large online search engines should establish a compliance function, which should be independent from the operational functions of those providers. The head of the compliance function should report directly to the management of those providers, including for concerns of non-compliance with this Regulation. The compliance officers that are part of the compliance function should have the necessary qualifications, knowledge, experience and ability to operationalise measures and monitor the compliance with this Regulation within the organisation of the providers of very large online platform or of very large online search engine. Providers of very large online platforms and of very large online search engines should ensure that the compliance function is involved, properly and in a timely manner, in all issues which relate to this Regulation including in the risk assessment and mitigation strategy and specific measures, as well as assessing compliance, where applicable, with commitments made by those providers under the codes of conduct and crisis protocols they subscribe to.