tie-up 
noun
1A link or connection, especially one between commercial companies: marketing tie-ups...
- Four Labour councillors and senior officers are looking into a proposed tie-up with a commercial organisation to take over some support services.
- The Football Association says that the money will be invested in the game's grass roots but traditionalists argue that commercial tie-ups like this devalue this venerable institution.
- Last week's announcement of a commercial tie-up between Manchester United and the Yankees was yet another indication of the way football is heading.
Synonyms
link, link-up, association, relationship, liaison;
deal, bargain, contract, (business) arrangement, covenant, accommodation, understanding, settlement, protocol, accord, entente, compact, bond;
alliance, coalition, federation, axis;
North American trust
1.1US A telecommunications link or network: technology tie-ups...
- As a result of the new tie-up, it is launching a new broadband service for £16.99 a month.
2US A building where cattle are tied up for the night: Holsteins in a tie-up
2.1A place for mooring a boat.The ports themselves aren't much more than quiet seawall tie-ups, and signage leading to a short stroll to town....
- Beyond having safe, reliable access to towns, many of the shiny new facilities are free, including overnight tie-ups, water, electric and pump outs.
3US A traffic hold-up: tie-ups extending for 30 miles...
- But he cautioned there will always be traffic tie-ups as long as drivers continue to slow down in tunnels.
- No one was injured, but the traffic tie-up from this accident went on for miles.
- Traffic tie-ups and winter weather are delaying travelers heading home for the holiday.