One of the most important considerations for new and updated monitoring and control applications is scalability. The question is: once a significant investment is made, how do end users get the most return on their investment? Or more simply put, how long will the system last? Chris Little, media relations, VTScada by Trihedral, talked with Control editor-in-chief Len Vermillion as they wondered, "What if a SCADA system could last 100 years?"