My significant other doesn’t work in IT, but we often discuss our days. Today I explained the difference between refactoring an application and rewriting one. Refactoring means the app works, but it’s not great. There are issues, probably technical debt, and refactoring…
Will improve the app, make it easier to maintain and extend its life. It’s still the original app, looks the same to users, but it’s probably faster and more stable.

Rewriting the app means completely replacing it. Writing a brand new app, from scratch, with more modern tech…
You may rewrite an application because it’s built using an extremely old framework or depends unacceptable old infrastructure. You can’t update it, it’s just too far gone.
Does anyone have any questions? I feel like teaching mini lessons. ☀️

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25 Nov
#minilesson The difference between applications and infrastructure;

Infrastructure is the operating system that applications live on. Think windows, linux, containers, and so much more. Sometimes hardware is included in this category (depending on who you talk to).
Infrastructure is necessary to run an application. Operating systems are also all standardized, not unique in nature. If we’re both running SQL server 2012 R2, we both have the same options for patches, configuration, etc. Operating systems are software that speak to hardware.
Applications are software that speak to operating systems, databases, APIs and anything else you can think of. There are custom applications (what I’m almost always talking about, software developed for a specific business need or as a product to sell), COTS…
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I used to work for the federal government in Canada, and so did my mom, but different departments. One single time, I got to work with her, and do an interdepartmental project. I WAS SO EXCITED.

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