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- [Instructor] Have you ever heard

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of the total cost of ownership or TCO?

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TCO is highly relevant to our discussion

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of open source products.

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On the surface, open source software,

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that is also free, appears to be a fantastic deal.

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However, there are many hidden costs

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when you take a closer look.

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Just like anything in this world

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software applications have lifespans or life cycles.

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We purchase and introduce them to production environment

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that is comparable to a person being born.

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Ample support is necessary especially in the beginning

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because of all the rough edges to be smoothed out

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for the software to be fully integrated

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into its environment.

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The users also need support in the form of training

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on how to use the software properly.

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As I mentioned, in the previous lesson,

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end user support is problematic

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unless you have a dedicated and knowledgeable team

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managing your open source software internally.

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When using a commercial product,

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you can shift much of these support costs

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to vendors like Microsoft.

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Considering the cost incurred during its entire life cycle,

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free and open source solutions may cost you more

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than merely using a third party offering commercial software

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and technical support.

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Because of this reality

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many open source providers also offer technical support

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and make a profit.

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Therefore you should always consider taking advantage

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of user support options,

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whether the software of your choice is open source or not.

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Despite the TCO,

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open source is still an excellent choice

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when you're starting to build your cyber security

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infrastructure

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and want to evaluate different options

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before settling on one.

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If you already have in-house expertise

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all you have to do is download, install and try it

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without worrying about speaking with sales representatives.

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My job in this course is to help you develop your knowledge

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in some of the most popular

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open source cybersecurity solutions

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so that you minimize your TCO.