Enterprise workforces are more mobile than ever. According to IDC, the global mobile workforce of teleworkers will surpass 1.3 billion people this year. Meanwhile, billions more are using their mobile devices in the workplace or on the go as they access enterprise apps and data.

For CIOs, a key consideration for achieving success in enterprise mobility “is how do you enable your workforce to do more from anywhere,” said Asheem Chandna, a Partner at Greylock Partners who is featured in an HMG video.

While enterprise mobility offers employees tremendous opportunities to do their work when and where they choose to, it also creates numerous challenges for CIOs. High on this list is ensuring that employees, business partners, and other stakeholders are able to access the apps and data that can enable them to become more productive and allow the enterprise to achieve strong ROI on its mobility investments.

Security is critical to driving mobile usage and productivity. According to a 2015 study conducted by Aruba Networks, security ranks as one of the most important factors for mobile workers when buying a new mobile device. Meanwhile, 87% of employees assume that their organization’s IT departments will keep them and their devices secure.

Communicating to employees how, where, and under what circumstances to use their mobile devices securely for work should be an ongoing exercise so that workers clearly recognize and are reminded about safe and risky security behaviors.

Since many employees use their personal devices for work, such communications should also include the steps that the enterprise has taken to secure networks and devices to help reassure employees that their personal data isn’t vulnerable when using their smartphones or tablets for work.

Sharing the enterprise’s mobile security policies for protecting sensitive corporate and customer data isn’t enough. Having a respected organizational business leader convey the importance of protecting sensitive data along with the potential risks and business impacts of data theft and loss can go a long way towards demonstrating the criticality of safe enterprise mobility behaviors in terms that employees are able to understand. Doing so can help reinforce why it’s dangerous for an employee to access corporate data while at a shopping mall or another unprotected setting.

Another way that CIOs and IT organizations can drive high levels of mobility is by making enterprise apps and data easy to find and access. A company-administered enterprise app store can make it simple for employees to locate and download role-based apps. If it’s too complicated for employees to download an app, they’ll bail out and adoption rates will suffer.

Of course, enterprise mobile apps also must be intuitive in order to drive high rates of adoption and productivity. A study conducted by Localytics reveals that 20% of enterprise mobile apps are used just once. Mobile apps need to be easy for employees to use and to navigate. For mobile apps that are developed in-house, be sure to include affected employees in the design and testing stages to ensure they’re getting what they want.