rics ) ▁of ▁Services ▁Model ▁elements ▁for ▁the ▁appropriate ▁time frame ( s ). ▁S vc V - 8 ▁Services ▁E volution ▁Description ▁ ▁The ▁planned ▁increment al ▁steps ▁toward ▁migr ating ▁a ▁suite ▁of ▁services ▁to ▁a ▁more ▁efficient ▁suite ▁or ▁toward ▁evol ving ▁current ▁services ▁to ▁a ▁future ▁implementation . ▁S vc V - 9 ▁Services ▁Technology ▁& ▁Sk ills ▁Fore cast ▁The ▁emer ging ▁techn ologies , ▁software / hard ware ▁products , ▁and ▁skills ▁that ▁are ▁expected ▁to ▁be ▁available ▁in ▁a ▁given ▁set ▁of ▁time ▁frames ▁and ▁that ▁will ▁affect ▁future ▁service ▁development . ▁S vc V - 1 0 a ▁Services ▁R ules ▁Model ▁ ▁One ▁of ▁three ▁models ▁used ▁to ▁describe ▁service ▁functionality . ▁It ▁ident ifies ▁constraints ▁that ▁are ▁im posed ▁on ▁systems ▁functionality ▁due ▁to ▁some ▁aspect ▁of ▁system ▁design ▁or ▁implementation . ▁S vc V - 1 0 b ▁Services ▁State ▁Trans ition ▁Description ▁One ▁of ▁three ▁models ▁used ▁to ▁describe ▁service ▁functionality . ▁It ▁ident ifies ▁responses ▁of ▁services ▁to ▁events . ▁S vc V - 1 0 c ▁Services ▁Event - Trace ▁Description ▁One ▁of ▁three ▁models ▁used ▁to ▁describe ▁service ▁functionality . ▁It ▁ident ifies ▁service - specific ▁ref in ements ▁of ▁critical ▁sequences ▁of ▁events ▁described ▁in ▁the ▁Oper ational ▁View point . ▁ ▁Stand ards ▁View point ▁( St d V ) ▁St d V - 1 ▁Stand ards ▁Profile ▁ ▁The ▁listing ▁of ▁standards ▁that ▁apply ▁to ▁solution ▁elements . ▁In ▁Do D AF ▁V 1 .