| Abstract: Strong gravitational lensing is a versatile tool to study various phenomena in astrophysics and cosmology. Strong gravitational lenses being rare, their discovery itself has been a challenge. In the recent past, however, owing to large imaging surveys, we were able to discover several hundreds of lenses. I will present some results from these surveys. With the onset of the Rubin Legacy Survey of Space and Time (LSST), we need to prepare for the "big data" challenge. I will introduce LSST and discuss how the strong lensing landscape will have to change in the era of the next generation imaging surveys. |