e23202 Background: Tumor board meetings have been a standard approach for managing complex cases. In 2020, a digital platform, navify® Tumor Board Solution (NTBS), was implemented at a comprehensive academic cancer center. The objectives of this study were to assess the impact of NTBS (1) on quality of patient information and case deliberation, (2) rate of change in care plans by the MCC, (3) compliance of care plans with national guidelines, and (4) concordance of treatment received with MCC recommendations. Methods: We conducted a prospective study from September 2020 to February 2022, before and after implementation of NTBS. We used a validated tool, “Metric for the Observation of Decision-Making", to assess the impact of the platform on the quality of breast MCC case presentation and discussion. We reviewed medical records to compare the rate of change in care plans, compliance with national guidelines, and concordance of treatment received with MCC recommendations. Results: There were 39 and 47 patient cases in the pre- and post-NTBS groups, respectively. We found that implementation of technology led to an improvement in the overall quality of the MCCs (mean composite scores: 56.4 vs 67.5; p < .001). Specific components that were significantly improved include case history, reason for presentation, radiology and pathology presentations, and medical oncology contribution to case discussions (mean scores: 3.4 vs 3.9; p < .001, 3.3 vs 3.9; p < .001, 2.7 vs 4.1; p < .001, 3.1 vs 4.2; p < .001 & 3.7 vs 4.1; p = .05). Pre- vs post-NTBS, rate of change in care plans decreased from 57.1% to 51.1%, compliance of MCC care plans with NCCN guidelines increased from 80.0% to 81.4%, and concordance of treatment received with MCC recommendations increased from 83.9% to 86.5%, though they were not statistically significant. Conclusions: Technology increases the quality of patient information presentation and case discussion at Breast MCCs, but in this small study we did not demonstrate an impact on MCC decision making. Areas for further development include assessment of improved efficiency of MCCs, opportunities for asynchronous MCC evaluation using this platform, establishment of automated case summaries, and technology-driven matching of detailed patient characteristics to established national guidelines.