Location-based ads are defined as any ads that are sent by an identified source to consumers' mobile devices when they are around the advertised product/store. Although mobile ad spending is said to have accounted for 68% of all digital ad spending in 2020, knowledge of how businesses can use mobile and location-based technology to reach their customers effectively is limited. Thus, the purpose of this three-essay format dissertation is to review the literature on LBA and identify the gaps in the literature and attempt to address a few of these gaps in the remaining two essays. The second essay tests an integrated model by examining the effects of the various retailer and consumer-controlled factors on two retail performances. In the third essay, we explore how LBA affects different dimensions of consumer-brand engagement. The results and findings provide important implications for retailers and brands to increase their performances.