Memo of AWS Certified Machine Learning - Specialty (MLS-C01)

Memo of AWS Certified Machine Learning - Specialty (MLS-C01)

Takahiro Iwasa
(岩佐 孝浩)
Takahiro Iwasa (岩佐 孝浩)
3 min read
AWS Certification

I have successfully passed AWS Certified Machine Learning - Specialty (MLS-C01) exam. I will be sharing some tips on how to obtain this certification.

AWS Skill before Taking Exam

I have already passed the following exams and have been using AWS for years in my daily work.

Mar. 2017Solutions Architect - Associate (SAA-C00)
Dec. 2019Solutions Architect - Professional (SAP-C01)
Jan. 2020DevOps Engineer - Professional (DOP-C01)
Jan. 2020Big Data - Specialty (BDS-C00)
Feb. 2020Security - Specialty (SCS-C01)
Feb. 2020Advanced Networking - Specialty (ANS-C00)


I began learning after passing Advanced Networking - Specialty, and made a plan to take the exam in May 2020.

AWS Official Practice Test

I took the official practice test.

Total score:  85%

Topic level score:
1.0  Data Engineering: 100%
2.0  Exploratory Data Analysis: 80%
3.0  Modeling: 75%
4.0  Machine Learning Implementation and Operations: 100%

Taking Exam

I took the exam on June 14th and successfully passed with a score of 932 out of 1,000.


Solutions Architect - Professional55
DevOps Engineer - Professional44
Machine Learning - Specialty34
Advanced Networking - Specialty33
Big Data - Specialty33
Security - Specialty32

Reference Materials


Jayendra’s Blog

This was an excellent resource for understanding the exam topics. The content is well-organized, and I recommend following this guide from start to finish on your learning path.


Introduction to Machine Learning with Python: A Guide for Data Scientists

I read this book as a beginner’s guide for machine learning.

AWS Official Documentation

Practice Tests

Whizlabs - AWS Certified Machine Learning - Specialty

I used this for my preparation.

Udemy - AWS Certified Machine Learning Specialty: Full Practice Exam

I did not use this, but it has a high rating and may be better organized than Whizlabs.


Frankly speaking, I think that passing this exam alone cannot guarantee that you are a specialist in the machine learning area. However, the exam offers a great opportunity to learn machine learning with AWS.

Takahiro Iwasa
(岩佐 孝浩)

Takahiro Iwasa (岩佐 孝浩)

Software Developer at iret, Inc.
Architecting and developing cloud native applications mainly with AWS. Japan AWS Top Engineers 2020-2023