A Florida child custody determination deals with the details of who is physically and legally responsible for the child and what timesharing rights other parties may have. 

If a determination is made in a Florida family law court, whether permanent or temporary, initial or modification, it is binding on all parties unless there is a subsequent modification.  

Persons inside the state of Florida will be served in accordance with Florida laws.  If a person resides outside of the state of Florida and they are served with a child custody determination, they must abide by the determination according to the Uniform Child Custody Jurisdiction and Enforcement Act.

Your expert Tampa family law attorney can advise you how each of the fifty states has passed exactly the same law with regard to which state has jurisdiction over child custody cases depending upon the contacts of the parents and the child with each particular state.  All of the other states will honor a child custody decision of any state which follows this statute.

Bottom line:  There are specific rules in place to determine which state has jurisdiction in any child custody jurisdiction dispute.