  The IceCube realtime alert system has been operating since 2016. It provides
prompt alerts on high-energy neutrino events to the astroparticle physics
community. The localization regions for the incoming direction of neutrinos are
published through NASA's Gamma-ray Coordinate Network (GCN). The IceCube
realtime system consists of infrastructure dedicated to the selection of alert
events, the reconstruction of their topology and arrival direction, the
calculation of directional uncertainty contours and the distribution of the
event information through public alert networks. Using a message-based workflow
management system, a dedicated software (SkyDriver) provides a representational
state transfer (REST) interface to parallelized reconstruction algorithms. In
this contribution, we outline the improvements of the internal infrastructure
of the IceCube realtime system that aims to streamline the internal handling of
neutrino events, their distribution to the SkyDriver interface, the collection
of the reconstruction results as well as their conversion into human- and
machine-readable alerts to be publicly distributed through different alert
networks. An approach for the long-term storage and cataloging of alert events
according to findability, accessibility, interoperability and reusability
(FAIR) principles is outlined.
