prebid_fledge_gam.plantuml

@startuml prebid_fledge_overview

participant User
participant "pub.com" as Pub
participant "prebid.js" as Pbjs
participant "prebid_[SSP_MODULE].js" as PbSspjs
participant SSPs
participant DSPs
participant "gpt.js" as Gmjs
participant "GAM/OB/AdX" as Gam
'autonumber

User -> Pub: 1. navigates browser to pub.com
activate Pub
Pub -> Pbjs: 2. loads & configures Prebid.js
Pub -> Gmjs: 3. loads & configures GPT

Pub -> Pbjs: 4. executes Prebid
activate Pbjs

Pbjs -> Pbjs: 5. detects FLEDGE eligibility
Pbjs -> PbSspjs: 6. invokes bid adapters
activate PbSspjs
PbSspjs -> SSPs: 7. makes ad request
activate SSPs
SSPs -> DSPs: 8. solicits contextual bids
activate DSPs
SSPs <- DSPs: 9. returns contextual bids and/or IG signals
deactivate DSPs
PbSspjs <- SSPs: 10. returns winning bid and/or AuctionConfig
deactivate SSPs
Pbjs <- PbSspjs: 11. registers bid and/or AuctionConfig
deactivate PbSspjs

Pbjs -> Gmjs: 12. invokes slot.setConfig for all AuctionConfigs received
activate Gmjs
Pbjs -> Gmjs: 13. configures k/v pairs for selected ad
Pbjs -> Gmjs: 14. invokes load slot
deactivate Pbjs
Gmjs -> Gam: 15. makes GAM ad request
activate Gam
Gmjs <- Gam: 16. returns GAM ad response
deactivate Gam
Gmjs -> Fledge: 17. invokes runAdAuction w/ComponentAuctions

alt A: Interest Group Auction winner
    activate Fledge
    Gmjs <- Fledge: 18. returns opaque pointer
    Pub <- Gmjs: 19. renders IG ad in fenced frame
    deactivate Gmjs
else B: No IG winner
    Gmjs <- Fledge: 18. returns null
    activate Gmjs
    alt B1: GAM winner
        Pub <- Gmjs: 19. renders contextual winner
    else B2: Prebid winner
        Pbjs <- Gmjs: 19 renders Prebid script/tag 
        deactivate Gmjs
        activate Pbjs
        Pub <- Pbjs: 20. renders Prebid contextual winner
        deactivate Pbjs
    end
end
deactivate Fledge
deactivate Pbjs

User <- Pub: 20. sees ad

deactivate Pub
@enduml