Skip to content
By using Twitter’s services you agree to our Cookies Use. We and our partners operate globally and use cookies, including for analytics, personalisation, and ads.

This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.

  • Home Home Home, current page.
  • About

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
colmmacc's profile
Colm MacCárthaigh
Colm MacCárthaigh
Colm MacCárthaigh
@colmmacc

Tweets

Colm MacCárthaigh

@colmmacc

AWS, Apache, Crypto, Irish Music, Haiku, Photography

Seattle
notesfromthesound.com
Joined April 2008

Tweets

  • © 2020 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Imprint
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
      • Report Tweet
      • Report NetzDG Violation

      o.k. shortish non-technical tweet thread this morning on capital Vs operational financial expenditure, because I only just learned a new way to think about it yesterday and it blew my mind. Maybe it's obvious to more, but it wasn't to me!

      3 replies 21 retweets 72 likes
      Show this thread
    2. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
      • Report Tweet
      • Report NetzDG Violation

      Since we first launched, one of AWS's biggest benefits has been that customers can trade many big capital expenses; building data centers, buying software licenses, and so on for operational expense. In general, AWS is pay for what you use, with monthly bill.

      2 replies 0 retweets 5 likes
      Show this thread
    3. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
      • Report Tweet
      • Report NetzDG Violation

      For a long time I've thought this is pretty simple. It's painful and wasteful to keep big chunks of money around and makes CFOs unhappy. Capital costs can be financed too, like buying a car, but there's an interest rate to pay and so the net-present-value cost is higher. Simple!

      1 reply 0 retweets 1 like
      Show this thread
    4. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
      • Report Tweet
      • Report NetzDG Violation

      Now I knew that that model is too simple; there's also waste in capital expenses because depreciation models and amortization aren't perfect. Basically you might buy something, and it can become obsolescent and you never get all the years out of it you wanted, and can't sell it.

      1 reply 0 retweets 2 likes
      Show this thread
    5. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
      • Report Tweet
      • Report NetzDG Violation

      But what I didn't really "get" until yesterday is that many CFOs prefer operational expenses because they are structurally easier to lower than capital expenses. This was an "aha!" for me. Here's how it clicked ...

      1 reply 1 retweet 5 likes
      Show this thread
      Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
      • Report Tweet
      • Report NetzDG Violation

      In general, when you have a big capital expense, like building a DC, it's a process that's bounded in time. A company might put a contract out for bid with suppliers, and they'll make their offers, and you pick one and you get on doing it.

      11:47 AM - 7 Mar 2019
      • 2 Likes
      • the network is just an abstraction layer
      1 reply 0 retweets 2 likes
        1. New conversation
        2. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
          • Report Tweet
          • Report NetzDG Violation

          but often things go over budget for unforeseen reasons, you can't just pause and litigate that too much, because there's time pressure too, and then the thing is delivered and you move on, and do another exercise a few years later.

          1 reply 0 retweets 2 likes
          Show this thread
        3. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
          • Report Tweet
          • Report NetzDG Violation

          Basically you get a limited number of high-stakes points at which you can try to save costs. If you did it often you might get good at it, but then it would be classed as an operational expense anyway, not a capital one.

          1 reply 0 retweets 3 likes
          Show this thread
        4. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
          • Report Tweet
          • Report NetzDG Violation

          Whereas with operational expenses: the organization can optimize costs on their own time, as and when the people or resources to do it are available. Wait for the quiet quarter, or whatever, do a "find some cost-savings" exercise, and make it stick as much as you can.

          1 reply 0 retweets 6 likes
          Show this thread
        5. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
          • Report Tweet
          • Report NetzDG Violation

          This is *structurally* much better way of doing business. Simple example: You can train people how to look for cost savings on an ongoing basis; not just hope you have the person who was around the last time we bid for a big contract, etc ...

          1 reply 1 retweet 6 likes
          Show this thread
        6. Colm MacCárthaigh‏ @colmmacc 7 Mar 2019
          • Report Tweet
          • Report NetzDG Violation

          I got all of this from a conversation with a CFO. Like I said, probably simple and obvious to many, but it wasn't to me. I never "got" that level to the whole thing, I thought it was just about budgetary math. But it makes total sense. End-of-thread!

          1 reply 0 retweets 16 likes
          Show this thread
        7. End of conversation

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2020 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Imprint
        • Cookies
        • Ads info