SQL 2008 R2-how long can I run it?

We are upgrading our servers from SBS 2008 to Server 2016.  How long can I run SQL 2008 R2?  In our new environment, we will have one instance of Server 2012 running so that we can run Exchange 2013.  There will also be two instances of Server 2016 running.
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I don't understand the question completely...
Attached is a link to MS SQL life cycle:

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David Johnson, CD, MVPOwnerCommented:
You can run it as long as you want but since it went EOL a long time ago there are no updates or security updates for it.
wfcrrAuthor Commented:
I was going to split the points between you two guys. Really wish EE would stop "improving" the site, It is fairly unclear how to select multiple posts for points awards.
wfcrrAuthor Commented:
Well, actually, it is completely hidden or it has been removed?  I cannot find a way to award Best and Assisted points.
Jim Dettman (Microsoft MVP/ EE MVE)President / OwnerCommented:
Well, actually, it is completely hidden or it has been removed?  I cannot find a way to award Best and Assisted points.

 Their bring back the old "classic" view for closing until they can work the kinks out with the new closing process.

 In regards to your question, the only thing that would stop you is:

a. Upgrading to an OS that doesn't support 2008 for some reason (little likelihood of that for a while).

b. A security flaw is exposed which won't get fixed, and it impacts your business.

  Other then that...it will keep running as long as you keep the power on<g>

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