In 2019, hybrid halide perovskites celebrated their 10th anniversary as a "wonder material" for optoelectronic applications. Although the parent perovskite structures were elucidated in the late 19th century, the seminal work by Miyasaka et al. exploiting organic‐inorganic hybrid halide perovskites sensitizers for visible‐light conversion in solar cells marked the revisit of these materials and has proven to be a game‐changer in this field. Extensive investigations were undertaken to develop new materials (all inorganic and organic‐inorganic hybrids, in the form of films or alternate morphologies) and deposition techniques, explore interfaces and in‐depth characterization, while engineering devices and testing methods for optimum results. Within a short time span, the power conversion efficiency (PCE) of single‐junction and tandem perovskite solar cells (PSCs) have exceeded 25% and 29% respectively; thus challenging the dominance of silicon solar cells. Building‐integrated photovoltaics (BIPV) is another hot topic in PSCs, where perovskite solar cells are designed to be semi‐transparent for deployment in residential or office building facades. Along with the success in photovoltaics, halide perovskites have also made their impact in light emission, lasing, imaging, spintronics, memristors, and photocatalysis. However, key challenges still lie ahead, particularly on the commercialization of perovskite devices. Poor material and device stability under operational conditions and the lack of reproducibility and scalability have remained problematic; whereas the search for suitable lead‐free perovskites continues.