The Google product that introduced Street View imagery was Google Maps.
Google Street View launched in Google Maps on May 25, 2007. The first imagery covered several American cities, including San Francisco, Las Vegas, Denver, New York, and Miami. Special camera cars captured panoramic photographs that users could explore interactively.
Google Earth and Google Maps are related but different products. Google Earth began as Earth Viewer and focuses on a three-dimensional globe, while Maps is designed primarily for searching places, planning routes, and viewing geographic information. Street View coverage later expanded to roads, trails, landmarks, and indoor locations in many countries, subject to local rules and privacy protections.