Which is NOT a benefit of using marketing information systems?

Reduced operational efficiency is not a benefit of using marketing information systems. In fact, one of the primary purposes of implementing a marketing information system is to increase operational efficiency. These systems are designed to streamline the collection, analysis, and dissemination of marketing data, enabling organizations to make quicker and more informed decisions.

The other options highlight distinct advantages of employing marketing information systems. Enhanced customer insights allow businesses to better understand their target audience, leading to more satisfying customer experiences and higher retention rates. Effective targeting of marketing efforts ensures that resources are allocated to the most likely successful campaigns, maximizing return on investment. Improved decision-making processes are facilitated by access to accurate, timely information, helping marketers to respond rapidly to market changes and customer needs. Therefore, it is clear that reduced operational efficiency contradicts the core purpose of marketing information systems.