The time has come to take shadow IT seriously and address the issue in a way that is inclusive to employees and meets the needs of the business.
Be Prepared to Engage
Line of business managers understand what it takes to accomplish their goals, and they employ the technology necessary to do so. But, they likely do not think about the impact that has on IT, whether it conforms to existing rules, or whether it creates a security risk. It's important to create a dialogue with coworkers, understand why they are going outside of traditional IT, and keep management informed on the topic so there is transparency throughout the company.