Customer‑service AI firm Sierra announced Thursday that it has bought French startup Fragment, a Y Combinator‑backed company that helps businesses embed artificial‑intelligence tools into everyday workflows. The deal marks Sierra's third public acquisition in as many weeks, following purchases of Japan's Opera Tech and voice‑agent firm Receptive AI. Fragment co‑founders Olivier Moindrot and Guillaume Genthial will join Sierra's engineering ranks. Financial terms were not disclosed, though PitchBook estimates Fragment raised about $2 million in seed funding. Sierra, founded by former Salesforce co‑CEO Bret Taylor, now counts Casper, Clear and Brex among its clients and is valued at roughly $10 billion. Read more →