B-Prost
B-Prost is a Tokyo-based prime vendor founded in 2003 that delivers consulting, custom development, and maintenance for non-life insurance companies in Japan, built around proprietary frameworks including the BIMs insurance system and BEXT Excel-based business rule engine.
- Company typePrivate
- Founded2003
- HeadquartersTokyo, Japan
- Headcount51–100
- GTM typeB2B
- OfferingServices
What B-Prost does
B-Prost Co., Ltd. is a privately held Tokyo-based insurance technology firm founded in December 2003, operating as a prime vendor specializing exclusively in non-life (property and casualty) insurance systems. The company delivers end-to-end services — IT strategy consulting, custom system development, and on-site/off-site maintenance — primarily to Japanese property-casualty insurers, small-amount short-term insurers, and mutual aid organizations. Engineers are typically stationed at client sites throughout the Tokyo metropolitan area, with engagements commonly running with 2 to 30+ dedicated personnel per client.
The company's core product portfolio comprises three proprietary tools: BEXT Engine, an Excel-based business rule definition system that allows non-technical insurance staff to author premium calculation and underwriting logic; BIMs, a full insurance system framework covering policy administration, billing, claims, and customer portals built on the NTT Data intra-mart BPM platform with a JSON document store; and BasD, a claims-side accident-scene drawing tool integrating government geographic maps with draw.io. B-Prost is also a Guidewire PartnerConnect-Consulting certified implementer.
The business model combines professional services (project-based system development and consulting) with managed services (multi-year maintenance contracts) and a smaller product licensing stream (BIMs, BEXT). BIMs is sold directly in Japan and through the NTT Data intra-mart APAC channel internationally. In December 2021 B-Prost took a capital investment from NTT Data INTRA-MART, and in June 2026 it joined the NSSOL (Nippon Steel Solutions) group via a third-party share allocation, gaining access to a TSE Prime-listed parent's enterprise customer base and resources. The company holds ISO 27001 (since 2018) and Privacy Mark (since 2011) certifications required for handling insurance customer data.
B-Prost firmographics
Firmographics- Name
- B-Prost
- Legal name
- 株式会社B-Prost
- Website
- https://b-prost.co.jp
- Company type
- Private
- Founded year
- 2003
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- B-Prost is a Tokyo-based prime vendor founded in 2003 that delivers consulting, custom development, and maintenance for non-life insurance companies in Japan, built around proprietary frameworks including the BIMs insurance system and BEXT Excel-based business rule engine.
- Ownership category
- akta.pro rank
Where B-Prost is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices2 records
Markets served
B-Prost business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- System Development Services: Custom system development for insurance companies including core policy administration, billing, and claims systems. Project-based engagements typically spanning several months to over a year.
- System Maintenance Services: Ongoing system maintenance (保守) services, both on-site (常駐) and off-site, ranging from 2 to 30+ engineers per client. Includes product amendments, rate changes, and operational improvements.
- Consulting Services: IT strategy consulting for insurance companies including DX roadmap formulation, systemization planning, and vendor evaluation.
- Product Licensing: Licensing of proprietary frameworks (BIMs, BEXT Engine) to insurance companies. Sold through direct engagement and via NTT Data intra-mart partnership in APAC region.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom enterprise pricing based on project scope |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
B-Prost product offering
Product offeringCore offering
B-Prost is an insurance technology consulting firm that acts as a prime vendor for non-life insurance companies in Japan, providing consulting, custom system development, and ongoing maintenance for core insurance systems. The firm also sells proprietary insurance software frameworks including BEXT Engine (Excel-based business rule tool), BIMs (insurance system framework for policy admin, billing, and claims), and BasD (accident scene drawing tool). It is a certified consulting partner for Guidewire InsuranceSuite and a BPM partner of NTT Data intra-mart.
Product overview
B-Prost offers a portfolio of proprietary insurance system products and services as a prime vendor specializing in insurance business. The core product lineup consists of three main solutions: (1) BEXT Engine/BEXT Webservice - an Excel-based business rule definition tool that enables rapid development of rate calculations and underwriting checks without coding; (2) BIMs - a comprehensive insurance system framework covering policy administration, billing, claims management, and customer portals with JSON document database architecture; and (3) BasD - a drawing tool for accident scene visualization using Japanese government maps. These products are complemented by consulting services for DX planning and system strategy, custom system development including Guidewire InsuranceSuite implementations, and ongoing system maintenance operations.
Differentiator
Problem solved
Functional benefit
Brands
- BEXT Engine: Excel-based development tool that enables business rule creation without programming, used for insurance rate calculations and underwriting checks.
- BIMs
- BasD
Products and services
- BEXT Engine / BEXT Webservice Excel-based development solution that enables business users to define and modify insurance business rules (premium rate calculations, underwriting checks, and data processing logic) without programming expertise. Exposes business rules through a SOAP API (BEXT Webservice) for system-to-system integration.
- BIMs (Insurance System Framework) State-of-the-art insurance system framework covering the entire insurance lifecycle including customer management, policy administration, billing, claims management, and agent management. Built on the NTT Data intra-mart BPM platform with JSON document database structure and responsive web design.
- BasD (Accident Scene Drawing Tool) Drawing tool for creating high-visibility accident scene diagrams using Geographic Survey Institute maps combined with draw.io open-source technology. Supports symbol libraries for vehicles and intersections and outputs HTML files for claim system integration.
- Insurance System Consulting IT strategy consulting for insurance companies covering digital transformation roadmap planning, FSA IT governance consulting, systemization concept development, and vendor evaluation.
- Custom Insurance System Development Custom insurance system development including Guidewire InsuranceSuite implementation (Policy Center, Billing Center, Claim Center), web portal systems, core insurance systems, and peripheral system integration for Japanese non-life insurance companies.
- Insurance System Maintenance On-site (常駐) and off-site system maintenance services ranging from 2 to 30+ engineers per client, covering product revisions, rate changes, and ongoing operational improvements for both proprietary and third-party developed insurance systems.
Quantifiable outcome
- Guidewire InsuranceSuite implementation in 9 months (company record)
- +2 more outcomes
Companies that use B-Prost
Customer profileNamed customers6 records
Segments3 records
Ideal customer profiles3 records
B-Prost technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration4 records
AI capability3 records
Feature4 records
B-Prost partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered flagship, minor and core.
- NTTデータ イントラマート (NTT Data intra-mart)flagshipCapital and business partnership for insurance solution development. BEXT and BIMs products certified and sold through intra-mart partner network in APAC region. Joint development of insurance-specific BPM solutions.
- 川崎フロンターレ (Kawasaki Frontale)minorOfficial supporter company (サポートカンパニー) for J1 League soccer club Kawasaki Frontale as part of CSR activities.
- NTTデータ イントラマート BPM PartnercoreBPM Partner certification enabling sales and deployment of intra-mart BPM platform products including for insurance industry solutions.
- NTTデータ イントラマート Consulting PartnercoreConsulting Partner certification for intra-mart implementation services in insurance sector.
- Guidewire PartnerConnect - ConsultingcoreCertified consulting partner for Guidewire InsuranceSuite (Policy Center, Billing Center, Claim Center) implementation in Japanese insurance market. B-Prost has implemented multiple Guidewire projects including domestic first implementations.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
B-Prost competitors and assessment
Company assessmentBroad incumbents
- Accenture: Global consulting leader with a large Insurance industry practice; competes for large transformation, Guidewire, and cloud-modernization engagements alongside B-Prost's Japanese insurance clients.
- Capgemini: Global SI with deep insurance industry consulting and systems integration capabilities; overlaps with B-Prost on core insurance modernization and digital transformation work.
- Fujitsu: Major Japanese SI with an established insurance systems practice; competes for the same core insurance modernization programs and brings scale, brand, and global delivery capability.
- Hitachi (Hitachi Consulting / GlobalLogic): Japanese conglomerate with SI capabilities including insurance industry solutions; competes with B-Prost in core systems, DX consulting, and managed services for Japanese insurers.
- Tata Consultancy Services (TCS): Global IT services leader with extensive insurance practice and Guidewire/implementation experience; competes for the same BFSI/insurance transformation deals at global scale.
- Cognizant: Global IT services firm with a strong insurance/BFSI vertical, often competing for Guidewire and core insurance platform implementations; relevant on cross-border and large enterprise deals.
- NSSOL (Nippon Steel Solutions): TSE Prime-listed SI and now B-Prost's parent company; a broader Japanese system integrator with insurance and industrial clients whose scale and parent-group resources overlap with B-Prost's service portfolio.
Direct peers
- NTT Data: Japan's largest IT services firm with a deep insurance vertical and a long-standing capital/Go-to-market partner of B-Prost via NTT Data Intra-mart; competes for the same core insurance modernization deals in Japan.
Others
- Guidewire Software: Core insurance platform vendor and B-Prost's key technology partner; not a direct competitor but a platform whose partner economics and product roadmap heavily shape B-Prost's delivery business.
Emerging players
- Majesco: US-headquartered insurance software provider whose cloud-native core systems address the same insurance modernization problem B-Prost solves for Japanese non-life insurers, increasingly relevant as Insurtech crosses into APAC.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
B-Prost social profiles
Digital presenceB-Prost compliance and trust
Trust signalCompliance2 records
B-Prost financial estimates
Financial estimateRevenue estimate
Valuation estimate
B-Prost leadership team
Management profileNumber of profiles
Profiles2 records
B-Prost funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
B-Prost M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about B-Prost
What does B-Prost do?
B-Prost is an insurance technology consulting firm that acts as a prime vendor for non-life insurance companies in Japan, providing consulting, custom system development, and ongoing maintenance for core insurance systems. The firm also sells proprietary insurance software frameworks including BEXT Engine (Excel-based business rule tool), BIMs (insurance system framework for policy admin, billing, and claims), and BasD (accident scene drawing tool). It is a certified consulting partner for Guidewire InsuranceSuite and a BPM partner of NTT Data intra-mart.
Is B-Prost a public or private company?
B-Prost is a private company. It is classified as corporate owned and is currently operating.
When was B-Prost founded?
B-Prost was founded in 2003. It employs 51 to 100 people.
Where is B-Prost based?
B-Prost is headquartered in Tokyo, Japan, in the Asia region.
How does B-Prost make money?
Four revenue lines are on record. System Development Services are the primary driver. The others are system Maintenance Services, consulting Services and product Licensing.
Who are B-Prost's main competitors?
Broad incumbents on record are Accenture, Capgemini, Fujitsu, Hitachi (Hitachi Consulting / GlobalLogic), Tata Consultancy Services (TCS), Cognizant and NSSOL (Nippon Steel Solutions). NTT Data is listed as a direct peer. Guidewire Software is listed as an others. Majesco is listed as an emerging player.
Does B-Prost have an API?
Yes. BEXT Webservice provides a SOAP API for system-to-system integration. Systems can integrate using simple SOAP API calls. Alternatively, BEXT Core Engine can be used without SOAP communication, and .NET Framework is not required, enabling use on Linux and other non-Windows environments.