Trenchless technology broadly brings under one banner a variety of non-disruptive techniques for installing, replacing or renovating underground pipes and cables without open-cut excavation. The term was introduced as recently as the early 1980s. Through the efforts of the International Society for Trenchless Technology (ISTT) and information disseminated at No-Dig Conferences, trenchless technology has become accepted as a specific construction term. Pipejacking, as both a principle and a technique, is a trenchless method of pipelaying that existed long before this term.