Google's Map Pack ranking algorithm weights three categories of signals. Proximity (distance from the searcher to your business address) is the largest single factor and the one businesses cannot directly control. Prominence (how 'known' your business is online — review count, review velocity, citation consistency, on-site domain authority, brand mentions) is the largest controllable factor and the one most Canadian SMBs neglect. Relevance (Google Business Profile category accuracy, business name keyword inclusion where legitimate, service-area definitions, services-listed completeness) is the easiest to fix but only moves the needle so far. The practical Map Pack growth path: maximize prominence through systematic review acquisition, citation cleanup, and on-site authority — these are the levers that compound.