Bing Maps Goes Silverlight
Microsoft just announced that it is taking the Bing Maps Sliverlight version out of beta and making it the default version for Bing Maps. The Bing Team is rolling this change out slowly. Within a few weeks, all users in the U.S. will see the Silverlight maps by default.
Context & Ripple Effects
Microsoft's Bing team spent late 2009 building out the Silverlight side of its platform — including previewing two Silverlight 4 features in September — and this move converts that runtime investment into default user traffic. Rather than asking users to opt in to a beta, the Bing team is flipping the switch so that within weeks every U.S. visitor loads the Silverlight maps unless they actively refuse.
The rollout is deliberately gradual, which reads as an attempt to watch performance and feedback before full exposure. It also makes Silverlight installation a practical requirement for the flagship Bing Maps experience — a notable bet at a time when Microsoft's browser and security posture was under strain.
First-order effects
- U.S. Bing Maps users get the richer Silverlight interface by default within weeks, and anyone without the Silverlight plugin now hits an install prompt on a core consumer property.
- The Bing team shifts its maintenance burden onto one codebase, retiring the old default experience it had been running alongside the beta.
Second-order effects
- Bing Maps becomes a large-scale distribution channel for the Silverlight runtime itself, letting Microsoft push plugin adoption through search traffic rather than developer persuasion alone.
- Every future Bing Maps capability — imagery updates, new layers — is now built against Silverlight, raising the cost of any later pivot away from the runtime.
Third-order effects
- If the pattern holds, Microsoft's consumer web properties double as delivery vehicles for its own client runtimes, deepening the strategic tension between proprietary rich-client platforms and the plugin-free open web — the outcome of which neither the corpus nor this decision settles.
The trend: Consumer web mapping is becoming a proving ground where platform owners convert search traffic into adoption of their own client runtimes.