Dark Energy Survey: Overview

The Dark Energy Survey (DES) is a ground-based imaging survey that covers 5000 deg$^2$ of the southern high Galactic latitude sky in five broad photometric bands, $grizY$. The primary mission of DES is to investigate cosmic acceleration and the nature of dark energy. I will introduce the survey and describe the most recent public data release, Data Release 2 (DR2), which comprises reduced images, source catalogs, and associated data products assembled from six years of DES science operations. I will review the previous state-of-the-art multi-probe cosmology from the first round of DES analyses. Finally, I will present an overview of a new ‘wide and deep’ approach to cosmology that we have applied to our most recent analysis of DES data taken through the first three years of observations (Y3).