2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2110Interferometric techniques are at the forefront of modern astronomical instrumentation. A new generation of instruments are either operating or nearing completion, including arrays of small telescopes as well as the ``big guns'' (VLTI and Keck). A number of space interferometers for the detection of extra-solar planets are also being planned. I review the current state of play and describe the latest developments in the field.6 pages. Invited talk at IAU Symposium 205: Galaxies and their Constituents at the Highest Angular Resolutions, Manchester UK, August 2000. Proceedings to be published by ASP, edited by R. Schilizzi, S. Vogel, F. Paresce, M. ElvisAstrophysicstext