RAPID will provide four services to the Roman astronomical community: 1) rapid image-differencing of every new Roman image from a reference image; 2) a prompt public alert stream of all transient and variable candidates in the Roman difference images; 3) source match-files recording candidate photometry for every Roman source observed more than once in the same filter; 4) forced photometry to investigate a precise photometric history at any sky location by drilling into all available Roman data. Development work will be performed prior to launch to adapt and tune previous methods to Roman. Team members of RAPID at IPAC are Ben Rusholme, Schuyler Van Dyk, Roberta Paladini, Joe Masiero, Jacob Jencson, Russ Laher, Amalia Rivera, and Siddharth Mohite,  joined by Caltech Astronomy colleagues Mansi Kasliwal, Lin Yan, and Ashish Mahabal.