PR#6 OPENESS.

HOW OPEN, HOW CLOSE.
Calibrating the right level of openness is undoubtably most critical element.

THE VARITIES OF OPENNESS.
There are three kind of decision that needs to be taken

• manager and sponsor participation
• developer participation
• user participation.

Manager and sponsor, The resposibilty of its operation and structure lies in firm manager and sponsor. For most company it is same.

Apple. [both]. Android. [google-sponsor, Samsung-manager]. LINIUX. [mutiple sponsor, mutilple manager. ]

Developer,

• core developers.
• extension developers.
• data agreegate.

Airbnb core developer, listing. Search. Data service.
The airbnb-photography. Cleaning service. Are the extension.

Airbnb controls the quality and too much openness by being the middleman,

Gaudian did open in and open out policy. By creating the different tiers. Keyless, approved. Bespoke.

The power of API to attract extension developer and the value they can provide are enournoumus.

Data aggregators collect from different sources. Like service of target.

WHAT TO OPEN AND CLOSE.
If you are a platform manager, you don’t want extension developer to control primary source of value. Siri. You buy or build your own. If a functionally has become widespread, should aquire and make it avalible through API.

user participation, in perticular producer openness. The right to freely add content to the platform. The Wikipedia problem and setting up the community rules. Systems like vandal proof, tagging machanism. Blocking tools.

Curation mainly talk place in the form of screening and feedback. Moderator to system, to rating system.

SIMILAR PLATFORM CAN COMPETE THROUGH DIFFERENT LEVEL OF OPENNESS.
Window vs mac. Google vs apple.