Ledger board fastened with lag bolts
Ledger board flashed and caulked
Joist hangers used
All footings meet or exceed IRC specs, are the appropriate depth below the frost level and are not covered with dirt to accelerate the rotting of the posts
All the appropriate connectors are used : joist hangers, post to beam connectors, post base connectors, hurricane clips and any other connectors necessary to give you the strongest possible construction.