Hi Svetlana,

While we do get data from OSM, we run our own tile server called
Kartotherian <https://github.com/kartotherian/kartotherian>, mainly for the
following reasons:

   - OSM's infrastructure is fragile and has cache challenges
   - Their datacenter is in London, which means latency becomes an issue
   - OSM's rendering stack can't scale horizontally well enough to be sure
   they could handle our load
   - Their map style is not mobile friendly
   - We require multilingual and vector tiles, which their stack can't do
   (currently)
   - We wanted to provide nicer map styling in general

Hope that helps!

On Mon, Feb 6, 2017 at 1:06 PM, Svetlana Tkachenko <[email protected]
> wrote:

> Are we even building our own tiles? I thought the 'Wikimedia maps' is
> just an interface to OSM.
>
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>



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Erika Bjune
Engineering Manager - Discovery
Wikimedia Foundation
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