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What exactly is Ubuntu Core, and how does it relate to Ubuntu itself (i.e. the main desktop and server distribution)?

I've read the answer to this question, which says it's just a minimal install of Ubuntu, but it says nothing about the "snappy" transactional updates that Mark Shuttleworth mentioned in his blog post.

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    Perhaps this page explains it a bit better?
    – Thomas Ward ♦
    Dec 10, 2014 at 2:05
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    If you are seeking other information please be more specific on what you're asking for. Your question is otherwise vague in its current state.
    – Thomas Ward ♦
    Dec 10, 2014 at 13:46
  • Also see: blog.dustinkirkland.com/2014/12/its-a-snap.html
    – muru
    Dec 10, 2014 at 13:54
  • @Thomas W. Sorry I was not clear. I was trying to figure out if there was a difference between the newly announced Ubuntu Core and the one that's been around for a while. The first link you posted claims it's "a new rendition of Ubuntu for the cloud with transactional updates", so since the answer to the "duplicate" of my question states that it's "just a minimal install of Ubuntu" and dates from months ago, I though these might be two different things.
    – Fern Moss
    Dec 11, 2014 at 23:33
  • @AibaraIduas Given that you've marked my answer as accepted, I assume it answered your question? (Although the duplicate is still marked and valid)
    – Thomas Ward ♦
    Dec 12, 2014 at 0:22

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This is the brief explanation of Snappy on the main Ubuntu site: (source)

Ubuntu Core is a new rendition of Ubuntu for the cloud with transactional updates. Ubuntu Core is a minimal server image with the same libraries as today’s Ubuntu, but applications are provided through a simpler mechanism. The snappy approach is faster, more reliable, and lets us provide stronger security guarantees for apps and users — that’s why we call them “snappy” applications.

Snappy apps and Ubuntu Core itself can be upgraded atomically and rolled back if needed — a bulletproof approach to systems management that is perfect for container deployments. It’s called “transactional” or “image-based” systems management, and we’re delighted to make it available on every Ubuntu certified cloud.

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  • What exactly is the 'snappy approach'...
    – Wilf
    Apr 3, 2015 at 22:37
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    @Wilf perhaps you'd like to go view the extremely in depth and much too big to fit on ask ubuntu page which I link to with the source link? That's the true source of information on this.
    – Thomas Ward ♦
    Apr 4, 2015 at 1:55
  • Yeah, sorry just had a quick look due to this question. I couldn't find much other than their some special thing involving tarballs (though there is now a great answer here) - probably ought to try it :D
    – Wilf
    Apr 4, 2015 at 11:04
  • The link http://www.ubuntu.com/snappy in the answer redirects to https://ubuntu.com/desktop/developers. web.archive.org only has copies of the redirection from the server since 2014.12.28. If you find the page elsewhere, it would be nice to read.
    – ergohack
    Sep 9, 2019 at 18:10

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