 Climate-related disasters are on the rise. Access to communication networks and services is critical for disaster response. But in the aftermath of a disaster, telecommunications infrastructure is often damaged and connectivity is interrupted. This is where the International Telecommunication Union's Disaster Connectivity Map, or DCM, comes in. Developed by the ITU Telecommunication Development Bureau, the DCM uses crowdsourced data collected before and after an emergency to detect connectivity outages. Identifying connectivity gaps can help responders decide where and when to deploy resources to restore vital links for those affected. The DCM has been activated in over 30 countries in response to disasters such as earthquakes, cyclones and tsunamis. ITU's Disaster Connectivity Map is constantly evolving to better support emergency relief efforts and help countries rapidly restore communication networks and build back better and stronger from disasters.