Which enterprise system focuses on managing and optimizing interactions with customers throughout the entire customer lifecycle, from lead generation to post$-$sales support?

Which enterprise system focuses on managing and optimizing interactions with customers throughout the entire customer lifecycle, from lead generation to post$-$sales support?

Enterprise Resource Planning $($ERP$)$ Systems

Human Resource Management $($HRM$)$ Systems

Supply Chain Management $($SCM$)$ Systems

Customer Relationship Management $($CRM$)$ Systems