The Crisis Communications app by Microsoft, available for free to Office 365 users, facilitates effective communication during crises by allowing employees to report their work status and request assistance from a crisis response team. The app integrates with various Microsoft tools such as Power Apps, Teams, and SharePoint, and includes features like push notifications and emergency contact sharing. While the app is free, implementation requires an Office 365 subscription and can be set up by Razor Technology for a fixed fee of $2,500.