DevOps
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It is an iterative method, in a loop.
Implementation
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DevOps:
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DevOps == 'Development', 'Operations'.
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A broad concept, something like a philosophy.
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DevOps:
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DevSecOps == 'Development', 'Security', 'Operations'.
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It's DevOps but with emphasis on Security, in addition to the other concepts.
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DevOps Engineer:
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It's a role.
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Use of CI/CD Pipeline.
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SRE:
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It's a role.
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SRE == 'Site Reliability Engineering'
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Part of DevOps. As the name says, but focused on 'reliability'.
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Continuous Integration / Continuous Deployment (CI/CD Pipeline)
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Steps:
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Code repository:
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Git.
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Containers / Packaging.
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Explanation:
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Similar in functionality to a Virtual Machine, but focused on the app rather than the Operating System.
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Docker.
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Build tools / Package managers:
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Maven.
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Gradle.
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Npm.
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'Push to artifact repository':
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Nexus.
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DockerHub.
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Automation of all steps (Build automation):
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GitLab.
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GitHub Actions.
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TeamCity.
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Jenkins.
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Cloud infrastructure as a service:
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AWS (Amazon).
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Google Cloud.
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Microsoft Azure.
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Alibaba Cloud.
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IBM Cloud.
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SalesForce.
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Tencent Cloud.
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Oracle Cloud.
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Waterfall
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Understanding S-Type, P-Type and E-Type Systems and why Waterfall is generally bad .
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The argument is that most productions are based on creating something that is an E-Type System, which indicates a constant feedback loop is needed to produce a good application. Since Waterfall does not loop, it does not fare well in this type of production. It is argued that Waterfall is only valid for S-Type Systems (the simplest and most predictable of all).
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Be careful with the central graph in the video (Stacey Matrix). He inverted the direction of the axes and only fixed it around 7:00.
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Agile
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Lean (for Software Development / Startup)
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Supposedly used for 'Anarchy' productions, where there is no certainty and no agreement.