GOOGLE FASTSEARCH IS FASTER THAN GOOGLE SEARCH

Summary from the TLDR newsletter

Google FastSearch is a technology used by Gemini for grounding purposes. It is faster than Google Search but retrieves fewer results, which can result in lower quality results, but it's good enough for grounding. FastSearch is not directly available to third parties. It is integrated into Vertex AI, which is available to third parties - Vertex customers do not receive FastSearch-ranked web results, only the information from those results.