Azure AI Search vs Vertex AI Vector Search
Azure AI Search: Microsoft's managed search service for full-text, vector, hybrid and agentic retrieval on Azure. Vertex AI Vector Search: Google Cloud's managed ANN service built on ScaNN, now part of Gemini Enterprise Agent Platform.
key differences
- Azure AI Search is primarily a search engine database; Vertex AI Vector Search is vector.
- Vertex AI Vector Search is built for larger datasets (Multi-PB) than Azure AI Search (≤ 1 PB).
- Only Azure AI Search has full-text search, geospatial, json.
- Only Vertex AI Vector Search has streaming ingest.
choose azure-ai-search for
- +Enterprise RAG over SharePoint and Blob content
- +Copilot and Foundry agent grounding
- +Site and catalog search on Azure
- +Hybrid semantic search for internal knowledge bases
best at · Search, Vector search, RAG
choose vertex-ai-vector-search for
- +Large-scale semantic search on GCP
- +Recommendation candidate retrieval
- +RAG for Gemini-based agents
- +Image and product similarity
best at · Vector search, RAG
Azure AI Search vs Vertex AI Vector Search: FAQ
What is the difference between Azure AI Search and Vertex AI Vector Search?
Azure AI Search: Microsoft's managed search service for full-text, vector, hybrid and agentic retrieval on Azure. Vertex AI Vector Search: Google Cloud's managed ANN service built on ScaNN, now part of Gemini Enterprise Agent Platform. Azure AI Search is primarily a search engine database; Vertex AI Vector Search is vector. Vertex AI Vector Search is built for larger datasets (Multi-PB) than Azure AI Search (≤ 1 PB). Only Azure AI Search has full-text search, geospatial, json.
When should I choose Azure AI Search over Vertex AI Vector Search?
Choose Azure AI Search for enterprise RAG over SharePoint and Blob content; copilot and Foundry agent grounding; and site and catalog search on Azure. Choose Vertex AI Vector Search for large-scale semantic search on GCP, recommendation candidate retrieval and RAG for Gemini-based agents.
Is Azure AI Search or Vertex AI Vector Search more popular?
Azure AI Search ranks #70 on the WhichDB Score (32.4/100) and Vertex AI Vector Search ranks #141 (21.2/100). Popularity is not fit: check the requirements that matter for your project.
Are Azure AI Search and Vertex AI Vector Search open source?
No. Azure AI Search is proprietary, closed-source software. No. Vertex AI Vector Search is proprietary, closed-source software.