# Tools and workflows can be complex, especially for large businesses.
Previously these tools were generally limited to simple CRM solutions
which focused on monitoring and recording interactions and
communications. Software solutions then expanded to embrace deal
tracking, territories, opportunities, and the sales pipeline itself.
Next came the advent of tools for other client-interface business
functions, as described below. These tools have been, and still are,
offered as on-premises software that companies purchase and run on their
own IT infrastructure. #The secret of CRM