cGAMP is widely used in immunology research due to its role as a second messenger in the innate immune response. It activates the STING pathway, which is crucial for triggering the production of type I interferons and other cytokines, making it valuable for studying antiviral and antitumor immunity. Researchers utilize cGAMP to explore its potential in cancer immunotherapy, as it enhances the immune system's ability to recognize and attack tumor cells. Additionally, it is employed in vaccine development to boost immune responses against pathogens. cGAMP is also investigated for its therapeutic potential in autoimmune diseases and chronic infections, offering insights into modulating immune signaling pathways.