Use of LTI, OneRoster, QTI, and Caliper Analytics standards can facilitate a cohesive testing experience for students and teachers as they can help unify summative and formative test functionality, resulting in elimination of intrusive administrative tasks while increasing the sophistication of available analytics. This presentation will demonstrate how each interoperability standard contributes to better e-assessment based on our experiences building and integrating an assessment platform designed for both summative and formative e-assessment.