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aws-well-architected-labs
Hands on labs and code to help you learn, measure, and build using architectural best practices.
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Historically speaking, in the ~15 years AWS has been around, have they ever increased prices for any service? In my experience, they've only ever decreased prices of their services as advances in tech have been made rather than increasing them. Sure some start out being expensive cough Macie and Fargate cough but they didn't increase prices after being launched as far as I'm aware.
Assuming they never have increased a price in 15 years, that doesn't prevent them from doing so, but it's a confidence inspiring track record.
I have about as much confidence that AWS won't raise prices on existing services/features as I do that Google will eventually kill another good project - https://killedbygoogle.com/
AZs are connected via normal user visible networks, you can just break those. They even provide examples, https://github.com/awslabs/aws-well-architected-labs/tree/ma...
Those are basic (don't cover flapping or glacial-speed slowdown degradation modes etc) but a starting point at least.