As my tenure as founding Editor-in-Chief comes to a close (SIAM wisely has term limits), I want to take a moment to reflect on the launch of the SIAM Journal on Mathematics of Data Science (SIMODS). I am grateful to the authors, reviewers, editorial board members, and SIAM staff who have contributed to the success of the journal. I am proud of the journal’s achievements and excited to turn over the reins to the new Editor-in-Chief, Misha Belkin.