The Deep Learning Institute (DLI) is NVIDIA’s training arm and the thing most people are looking for. It runs the self-paced courses — free and paid — and the instructor-led workshops, and it is where your course enrolments and completion certificates live. Course access is through NVIDIA’s learning platform, and you sign in with the NVIDIA account you created when you enrolled.
NVIDIA Academy is a separate, narrower programme: professional and enterprise-oriented training, largely aimed at partners, resellers and enterprise IT staff working with NVIDIA platforms. If you searched for it hoping to find the free generative-AI courses, you want DLI instead.
Certification is a third thing again, administered through NVIDIA’s certification programme rather than either training organisation. Passing an exam is what puts a verifiable badge in your credential wallet; completing a course is what puts a certificate in your DLI profile. They are not the same login flow and not the same record.
The single practical takeaway: if you cannot find a certificate you earned, look in the DLI platform under the account you enrolled with. If you cannot find a certification you passed, look in the credential wallet NVIDIA emailed you after the exam.