A large construct intended for the housing of an archailect or transapient or a high singularity culture or civilization. ISOs can be mobile or stationary, with sizes ranging from a few kilometers to Dyson spheres.
Eklund ISO - Text by Anders Sandberg Historical Keterist world, exploiting the tremendous computing resources of the ISO for historical simulations/recreations (often called retreations) based on all available evidence and the self-consistency of history. Beside the Institute of Long-Range Cliology it is also known for the the Resurrection Orbit, a corporate brotherhood specializing in resurrecting versions of historical persons from the Institute retreations.
Taq-e Bostan ISO - Text by M. Alan Kazlev The ISO where, during the late ComEmp period the famous vec artist Outer Enrastered Link Connection underwent personal ascension to the second singularity level.