prebid_fledge_overview.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

User -> Pub: 1. navigates browser to pub.com
activate Pub
Pub -> Pbjs: 2. load, configure, execute prebid.js
activate Pbjs
Pbjs -> PbSspjs: 3. invoke SSP bid adapters
activate PbSspjs
PbSspjs -> SSPs: 4. ad request
activate SSPs
SSPs -> DSPs: 5. make bid requests 
activate DSPs
SSPs <- DSPs: 6. respond with contextual bids and IG signals
deactivate DSPs
PbSspjs <- SSPs: 7. bid and/or IG signal/intent
deactivate SSPs
Pbjs <- PbSspjs: 8. bid w/optional AuctionConfig
deactivate PbSspjs

Pbjs -> Gmjs: 9. configure k/v pairs for selected ad
activate Gmjs
Pbjs -> Gmjs: 10. load slot
Gmjs -> Gam: 11. ad request
activate Gam
Gmjs <- Gam: 12. respond with ad & AuctionConfig?
deactivate Gam
Pbjs <- Gmjs: 13. ????
deactivate Gmjs

note over Pbjs, Gmjs
Big open question: Will GPT provide hooks to integrate with Prebid.js?
end note

Pbjs -> Pbjs: 14. Create uber AuctionConfig
Pbjs -> Fledge: 15. runAdAuction

alt A: IG winner
activate Fledge
Pbjs <- Fledge: 16A. opaque pointer
Pub <- Pbjs: 17A. render ad in safe frame
else B: No IG winner
Pbjs <- Fledge: 16B. null result
Pub <- Pbjs: 17B. render contextual winner
end
deactivate Fledge
deactivate Pbjs

User <- Pub: sees ad

deactivate Pub
@enduml