In　our　previous　article,　we　proposes　an　approach　for　automated　composition　of　Web　services　which　decomposes　task　into　smaller　And,　Or　subtasks　to　find　out　the　optimized　solution　graph　based　on　And/Or　graph.　This　paper　designs　a　layered　architecture　to　support　the　transition　from　the　And/Or　solution　graph　to　executable　workflow　by　the　composition　approach　above.　The　architecture　consists　of　four　layers　which　includes　the　Knowledge　Ontology,　Task　Template,　Mediator,　and　Web　Service　from　up　to　down　in　the　order.　The　architecture　has　the　following　features:　1)　It　designs　a　task　template　to　support　the　semantic　Web　services　composition　and　composite　reuse;　2)　the　architecture　realizes　the　task-driven　Web　services　searching　based　on　semantic　capability　representation　and　specifies　the　heterogeneity　solution　in　the　web　usage.　In　this　paper,　we　proposes　composition　algorithm　and　a　motivation　example　provides　a　preliminary　experimental　illustration　which　clearly　shows　the　benefits　of　our　approach.　©　2010　IEEE.