Should I rely on externally-hosted services?

Posted by Mattis on Pro Webmasters See other posts from Pro Webmasters or by Mattis
Published on 2011-06-20T13:33:38Z Indexed on 2011/06/21 0:30 UTC
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php

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JavaScript

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web-development

I am wondering over the dangers / difficulties in using external services like Google Chart in my production state website.

With external services I mean them that you can't download and host on your own server.

(-) Potentially the Google service can be down when my site is up.

(+) I don't have to develop those particular systems for new browser technologies, hopefully Google will do that for me.

(-) Extra latency while my site fetch the data from the google servers.

What else? Is it worth spending time and money to develop my own systems to be more in control of things?

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