Retrieval-Augmented Generation: the AI pathway in which models search external sources before answering, rather than relying solely on parametric memory. RAG retrieval is the faster pathway to entity presence because it operates on current web data rather than frozen training data. However, RAG-only presence is contextually fragile: it depends on the retrieval system surfacing the right sources at query time. Full spectrum dominance requires simultaneous presence in both RAG and parametric pathways. RAG presence without parametric presence produces inconsistent brand authority across user contexts.