Walled Garden
A closed platform, walled garden or closed ecosystem is a software system where the carrier or service provider has control over applications, content, and media, and restricts convenient access to non-approved applications or content. This is in contrast to an open platform, where consumers have unrestricted access to applications, content, and much more.
For example in telecommunications, the services and applications accessible on a cell phone on any given wireless network used to be tightly controlled by the mobile operators. The mobile operators limited the applications and developers that were available on users' home portals and home pages. For example, a service provider might have restricted user access to users with no pre-paid money left on their account. This has long been a central issue constraining the telecommunications sector, as developers face huge hurdles in making their applications available to end-users.
Apple iOS and other devices, are restricted to running pre-approved applications from a digital distribution service.
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