Google Apps for Business
http://www.google.com/intx/ja/enterprise/apps/business/
料金 Google Apps for Business
http://www.google.co.jp/intx/ja/enterprise/apps/business/pricing.html
導入事例|Google Apps ソフトバンクの法人向けグループウェア
http://tm.softbank.jp/business/white_cloud/google_apps/case/?bid=1205gagn_case