Millimeter-wave wireless applications offer tremendous advantages over traditional <6GHz wireless. The wide swaths of available bandwidth enable extremely high data rates to satisfy our ever-growing need for data. The usage of narrow beams enables spatial re-use of spectrum, which further increases network capacity. However, millimeter-wave deployments are faced with several fundamental challenges. Performance of electronics degrades as frequency increases, which further exacerbates the challenge of establishing reliable links over reasonable distances. In order to overcome these challenges, deployments use large arrays of antennas, but this drives up the cost and power consumption of the solution. A holistic Antennas-to-Algorithms approach to millimeter-wave solutions enables transformative enhancements in performance compared to the traditional siloed approach to RF systems. At the core of this holistic approach is the use of RF-SOI semiconductor technology for millimeter-waves. Considering why Antenna in Package (AiP) is important, considering AIP advantages, types of AiP for GNodeB, Repeater and CPE AiP designs and future directions.