Hi @harishgupta4SAP this question is perfect for the many SAP BTP scenarios. A brownfield conversion assumes that some existing coders will have legacy knowledge and some of those may have newer skillsets or some coders with k8's and container skills may be added to the team who have never hear of the legacy code. For S/4HANA its about making a connection to the SAP data using BTP. A runtime of Cloudfoundry and a CAP application may be used, or a kyma based application can be used if those with container skills are there to help. So it's a complete picture when you know what data you want to access and what style application will be opening access to that data. Hope that helps.