ative ▁to ▁standard ize ▁U ML ▁and ▁S ys ML ▁usage ▁for ▁USA ▁and ▁UK ▁defense ▁architecture ▁frameworks . ▁In ▁addition , ▁the ▁multi - n ational ▁IDE AS ▁Group , ▁which ▁is ▁supported ▁by ▁ ▁Australia , ▁Canada , ▁Sweden , ▁UK , ▁USA , ▁with ▁NAT O ▁obser vers , ▁has ▁launched ▁an ▁initi ative ▁to ▁develop ▁a ▁formal ▁ont ology ▁for ▁enter prise ▁architect ures . ▁▁ ▁Crit ic ism ▁ ▁The ▁effic acy ▁of ▁Do D AF ▁at ▁the ▁U . S . ▁Department ▁of ▁Def ense ▁for ▁developing ▁enter prise ▁architecture ▁has ▁been ▁deb ated : ▁ ▁In ▁ 2 0 0 4 ▁it ▁was ▁reported ▁that ▁" des p ite ▁three ▁years ▁of ▁effort ▁and ▁over ▁$ 2 0 3 ▁million ▁in ▁reported ▁oblig ations , ▁Do D ’ s ▁architecture ▁remains ▁ins u fficient ly ▁defined , ▁and ▁the ▁way ▁in ▁which ▁the ▁department ▁makes ▁business ▁systems ▁invest ments ▁dec isions ▁remains ▁largely ▁un changed ". ▁ ▁In ▁ 2 0 0 5 ▁it ▁was ▁reported ▁that ▁" des p ite ▁sp ending ▁almost ▁four ▁years ▁and ▁about ▁$ 3 1 8 ▁million , ▁Do D ▁does ▁not ▁have ▁an ▁effective ▁architecture ▁programme ". ▁ ▁In ▁ 2 0 1 3 ▁it ▁was ▁reported ▁that ▁" even ▁though ▁Do D ▁has ▁spent ▁more ▁than ▁ 1 0 ▁years ▁and ▁at ▁least ▁$ 3 7 9 ▁million ▁on ▁its ▁business ▁enter prise ▁architecture , ▁its ▁ability ▁to ▁use ▁the ▁architecture ▁to ▁guide ▁and ▁const rain ▁invest ments