{"slug":"fastweb-vodafone-uses-gemini-to-generate-code-documentation-and-power-a-developer-chat-interface-on-spanner","url":"https://findausecase.com/use-cases/fastweb-vodafone-uses-gemini-to-generate-code-documentation-and-power-a-developer-chat-interface-on-spanner","title":"Fastweb + Vodafone uses Gemini to generate code documentation and power a developer chat interface on Spanner","description":"Fastweb + Vodafone, an Italian telecom provider, uses Gemini to generate documentation directly from code for under-documented legacy services. The output is stored in Spanner as vector embeddings to form a searchable knowledge base, and a Gemini-powered chat interface lets developers ask natural-language questions about code. The source describes this as part of rebuilding its Customer 360 platform on Spanner and BigQuery and gives no quantified result for the Gemini workflow.","company":"Fastweb + Vodafone","industry":"Telecommunications","country":"Italy","aiCapabilities":["Generative AI","Retrieval-Augmented Generation"],"technology":["Gemini","Spanner"],"deployment":"Public Cloud","problemStatement":"Many services at Fastweb + Vodafone had limited documentation, especially older systems that had evolved over time, across a large and varied codebase.","solutionApproach":"Gemini generates documentation directly from code. The output is stored in Spanner as vector embeddings, creating a searchable knowledge base, and a Gemini-powered chat interface lets developers ask natural-language questions about the code.","businessValue":"The source says the workflow saves hours of manual work, reduces time spent deciphering legacy logic or chasing subject-matter experts, and speeds up onboarding. It gives no quantified result for the Gemini workflow.","evidence":{"band":"high"},"sourceUrl":"https://cloud.google.com/blog/products/databases/how-fastweb-vodafone-reimagined-data-workflows-with-spanner-bigquery","dates":{"publishedAt":"2026-11-12T05:46:42.784Z","publishedAtSource":"pipeline","updatedAt":"2026-11-12T05:46:42.784Z"},"license":"Open for reading and citing with a link to https://findausecase.com/use-cases/fastweb-vodafone-uses-gemini-to-generate-code-documentation-and-power-a-developer-chat-interface-on-spanner. Bulk republication requires permission."}