[pharmakom]

It’s all about lock in. AWS has a bunch of features that you could implement yourself in an afternoon with a few EC2s, but it’s much easier to click the checkbox. Repeat this across an entire org for a few years and you are deeply coupled to AWS. They are anti features in that sense.

[Nextgrid]

In some cases you end up writing more glue code to shoehorn some AWS service into your workflow than just implementing the functionality yourself.