An electronic system includes a substrate and a top surface active component die. The substrate includes a glass core layer including a cavity formed through the glass core layer; a glass core layer active component die disposed in the cavity; a first buildup layer contacting a first surface of the glass core layer; a second buildup layer contacting a second surface of the glass core layer; and a mold layer contacting a surface of the first buildup layer. The mold layer includes a mold layer active component die disposed in the mold layer, and the first buildup layer includes electrically conductive interconnect providing electrical continuity between the glass core layer active component die and the mold layer active component die. The top surface active component die is attached to the top surface of the substrate and electrically connected to the mold layer active component die.