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Top 20 Japanese System Integrators (SIers) by Revenue
The following list ranks the leading Japanese system integrators (SIers) by annual revenue, primarily based on FY2025 results. RankCompanyApprox. Annual Revenue1NTT DATA GroupUSD 31B (JPY 4.6T)2FujitsuUSD 24B (JPY 3.6T)3NEC CorporationUSD…