Amazon AWS Certifications - 50% off

Awsome Day Online Conference | October 13 - FREE
I was just viewing the AWS Certifications page when I read there is a free conference at the bottom of the page.
If interested, sign up! https://aws.amazon.com/certification/

Furthermore, right above the conference is a link for the AWS Associate exam!
AWS Certified Solutions Architect - Associate 50% off your exam!
The cost of the 2-3 hour exam is $150, but at 50% off, it's now $75.

Question: I recall if you take an exam, they provide a 50% discount for the next exam, is that the case?
How does that AWS second exam work? I guess it's for a subsequent specialty cert or to ladder upwards.

 

AWS Certified can lead to good-paying jobs, but I hate vendor-specific certifications. I used to have a bunch of Cisco, Microsoft, CompTIA, and others; and now I only use CISSP, PMP, ITIL, and CEH.