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The iSeries 400 Experts (formerly The 400 Group) provide you with practical how-to advice and important management data and insight to keep your technical skills and market knowledge current. Through its longstanding and industry-respected publications, Insider Weekly and iSeries 400 Experts Journal, you are sure to make the best hardware, software, technology, migration, and business decisions to get the most out of your iSeries 400. Our easy-to-read, concise newsletters and how-to articles are designed to save you time, money, and headaches.

iSeries 400 Experts Questions

The iSeries 400 Experts annual revenue was $1 million in 2026.

iSeries 400 Experts is based in Dedham, Massachusetts.

The NAICS codes for iSeries 400 Experts are [541, 54111, 54, 5411].

The SIC codes for iSeries 400 Experts are [81, 811].

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