Sumitomo Electric Information Systems
Category: AI Search / Retrieval
Japanese system integrator and Sumitomo Electric group subsidiary providing enterprise document management (RakuRaku Document Plus), enterprise search (QuickSolution), low-code, workflow and procurement software with AI/RAG capabilities. Sumitomo Electric Information Systems was founded in 1998. The company is led by Koichi Kuratomi (倉富 幸一). Based in Osaka, Japan. Team size: 500+. Latest round: Bootstrapped. Key investors include Sumitomo Electric Industries, Ltd. (60%), Sumitomo Wiring Systems, Ltd. (40%).
- Founded
- 1998
- Headquarters
- Osaka, Japan
- Team size
- 500+
Value proposition
Provides enterprise software for document management, information sharing, enterprise search, workflow/approval, and low-code development — now enhanced with generative AI (AI-OCR, AI chat, autonomous RAG search) and MCP-based integration with Microsoft 365 Copilot to automate information retrieval and business processes.
Products and solutions
RakuRaku Document Plus (document management & information sharing, with AI agent autonomous RAG search and MCP support), QuickSolution (enterprise search; Japan's #1 for 10 consecutive years per Fuji Chimera), RakuRaku Framework 3 (low-code dev platform), RakuRaku Workflow II (electronic approval), RakuRaku Web Database (no-code), MCore (IT asset/security management), RakuRaku Procurement II (procurement), RakuRaku SupportSite (helpdesk), RakuRaku View II (DB visualization)
Unique value
Combines Japan's #1 enterprise search engine (QuickSolution) with document management and generative AI (AI-OCR, AI chat, autonomous RAG search) plus MCP-based integration with Microsoft 365 Copilot, enabling secure, permission-aware enterprise knowledge access.
Target customer
Japanese enterprises and organizations (manufacturing, financial, public sector) needing document management, enterprise search, workflow automation, and DX/AI adoption; from mid-size to large corporations.
Industries served
Manufacturing, financial services, public sector/government, healthcare, logistics, and general enterprise — across Sumitomo group and external customers.
Technology advantage
10-year consecutive #1 share in Japan's enterprise search package market (Fuji Chimera Research); AI-OCR for handwritten text search; autonomous RAG search AI agent; MCP (Model Context Protocol) server support enabling Microsoft 365 Copilot and other AI agents to securely query enterprise documents while preserving access permissions.
How they differentiate
Differentiates via the #1-ranked QuickSolution enterprise search engine embedded in RakuRaku Document Plus, plus early adoption of generative AI (AI-OCR, autonomous RAG, MCP-based Copilot integration) while maintaining strict access-permission controls for secure enterprise document use.
Main competitors
DocuWorks (Fujitsu), ArcSuite (NEC), CloudSign SCAN (クラウドサイン), invoiceAgent (AI inside)
Key partnerships
Microsoft (Microsoft 365 Copilot integration via MCP), AWS (QuickSolution x AWS for cross-enterprise search and RAG), Cybozu (Official Product Partner — QuickSolution × Garoon), CloudSign (electronic contract service integration), Amazon Business (procurement).
Notable customers
SFJ Solutions, Okamoto (contract management), 1,000+ enterprise customers across manufacturing, finance, and public sector.
Major milestones
Founded Oct 1, 1998, QuickSolution #1 in Japan enterprise search for 10 consecutive years (Fuji Chimera), RakuRaku Document Plus surpassed 1,000 enterprise customers by March 2026, launched AI agent autonomous RAG search and MCP-based Microsoft 365 Copilot access (Aug 2026), QuickSolution MCP server launched Aug 2026.
Growth metrics
670 employees; capital ¥480 million (4.8億円); RakuRaku Document Plus surpassed 1,000 enterprise customers (announced March 12, 2026).
Market positioning
Leading Japanese enterprise document management and search vendor; RakuRaku Document Plus holds ~16% share (top in Japan per Boxil survey), and QuickSolution has been #1 in enterprise search for 10 consecutive years.
Geographic focus
Japan (domestic market leader); part of the global Sumitomo Electric group.
Patents and IP
RakuRaku Document, QuickSolution are registered trademarks of Sumitomo Electric Industries, Ltd.
About Koichi Kuratomi (倉富 幸一)
Promoted from within Sumitomo Electric Information Systems; previously served as director/executive at the company before becoming Representative Director & President in June 2025 (succeeding Saburo Narahashi). Part of the Sumitomo Electric Industries group.
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Official website: https://www.sei-info.co.jp/
