Sources of Funding: This article was supported by a grant from Danone to enable a consensus meeting to be held virtually on May 2021 and to facilitate the writing and editing of the manuscript. The funders made no scientific, writing, or editorial contribution to the meeting or manuscript. O.G. has given lectures or attended advisory boards for Danone, Biocodex, and Fresenius Kabi. K.H. has received honoraria from Nestle Nutrition Institute and participated as advisory board member for Danone. A.V.K. has received an honorarium from Danone for taking part in this consensus meeting. K.J. has previously received honoraria for lectures from Nutricia and participated as advisory board member for Nutricia. R.M. has received an honorarium from Danone for taking part in this consensus meeting and previously received honoraria for lectures and advisory boards from Danone/Nutricia, Mead Johnson, Abbott, and Nestle. A.M.P. has previously received honoraria to give lectures or attend advisory boards for Danone Institutes International and the Nestlé Nutrition Institute (NNI). A.S. has previously received honoraria to give lectures or attend advisory boards for Danone, Nestle, Reckitt, Phillips, Abbott Nutrition, and several academic institutions. All authors (except K.J.) received an honorarium from Danone for taking part in the consensus meeting resulting in this publication.