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AWS Certified Machine Learning - Specialty (MLS-C01) Exam Guide, Exams of Machine Learning

This comprehensive guide provides a detailed overview of the aws certified machine learning - specialty (mls-c01) exam, covering key content domains, task statements, and recommended knowledge areas. It outlines the exam format, scoring system, and provides insights into the specific skills and experience required for successful certification.

Typology: Exams

2024/2025

Available from 03/22/2025

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AWS Certified Machine Learning - Specialty (MLS-C01) Exam Guide
Introduction
The AWS Certified Machine Learning - Specialty (MLS-C01) exam is intended for
individuals who perform an artificial intelligence and machine learning (AI/ML)
development or data science role. The exam validates a candidate’s ability to design,
build, deploy, optimize, train, tune, and maintain ML solutions for given business
problems by using the AWS Cloud.
The exam also validates a candidate’s ability to complete the following tasks:
Select and justify the appropriate ML approach for a given business problem.
Identify appropriate AWS services to implement ML solutions.
Design and implement scalable, cost-optimized, reliable, and secure ML
solutions.
Target candidate description
The target candidate should have 2 or more years of experience developing,
architecting, and running ML or deep learning workloads in the AWS Cloud.
Recommended AWS knowledge
The target candidate should have the following AWS knowledge:
The ability to express the intuition behind basic ML algorithms
Experience performing basic hyperparameter optimization
Experience with ML and deep learning frameworks
The ability to follow model-training best practices
The ability to follow deployment best practices
The ability to follow operational best practices
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AWS Certified Machine Learning - Specialty (MLS-C01) Exam Guide

Introduction

The AWS Certified Machine Learning - Specialty (MLS-C01) exam is intended for individuals who perform an artificial intelligence and machine learning (AI/ML) development or data science role. The exam validates a candidate’s ability to design, build, deploy, optimize, train, tune, and maintain ML solutions for given business problems by using the AWS Cloud. The exam also validates a candidate’s ability to complete the following tasks:

  • Select and justify the appropriate ML approach for a given business problem.
  • Identify appropriate AWS services to implement ML solutions.
  • Design and implement scalable, cost-optimized, reliable, and secure ML solutions.

Target candidate description

The target candidate should have 2 or more years of experience developing, architecting, and running ML or deep learning workloads in the AWS Cloud. Recommended AWS knowledge The target candidate should have the following AWS knowledge:

  • The ability to express the intuition behind basic ML algorithms
  • Experience performing basic hyperparameter optimization
  • Experience with ML and deep learning frameworks
  • The ability to follow model-training best practices
  • The ability to follow deployment best practices
  • The ability to follow operational best practices

Knowledge that is out of scope for the target candidate The following list contains knowledge that the target candidate is not expected to have. This list is non-exhaustive. Knowledge in the following areas is out of scope for the exam:

  • Extensive or complex algorithm development
  • Extensive hyperparameter optimization
  • Complex mathematical proofs and computations
  • Advanced networking and network design
  • Advanced database, security, and DevOps concepts
  • DevOps-related tasks for Amazon EMR Refer to the Appendix for a list of technologies and concepts that might appear on the exam, a list of in-scope AWS services and features, and a list of out-of-scope AWS services and features.

Exam content

Response types There are two types of questions on the exam:

  • Multiple choice: Has one correct response and three incorrect responses (distractors)
  • Multiple response: Has two or more correct responses out of five or more response options Select one or more responses that best complete the statement or answer the question. Distractors, or incorrect answers, are response options that a candidate with incomplete knowledge or skill might choose. Distractors are generally plausible responses that match the content area. Unanswered questions are scored as incorrect; there is no penalty for guessing. The exam includes 50 questions that affect your score.

The exam has the following content domains and weightings:

  • Domain 1: Data Engineering (20% of scored content)
  • Domain 2: Exploratory Data Analysis (24% of scored content)
  • Domain 3: Modeling (36% of scored content)
  • Domain 4: Machine Learning Implementation and Operations (20% of scored content) Domain 1: Data Engineering Task Statement 1.1: Create data repositories for ML.
  • Identify data sources (for example, content and location, primary sources such as user data).
  • Determine storage mediums (for example, databases, Amazon S3, Amazon Elastic File System [Amazon EFS], Amazon Elastic Block Store [Amazon EBS]). Task Statement 1.2: Identify and implement a data ingestion solution.
  • Identify data job styles and job types (for example, batch load, streaming).
  • Orchestrate data ingestion pipelines (batch-based ML workloads and streaming-based ML workloads). o Amazon Kinesis o Amazon Data Firehose o Amazon EMR o AWS Glue o Amazon Managed Service for Apache Flink
  • Schedule jobs. Task Statement 1.3: Identify and implement a data transformation solution.
  • Transform data in transit (ETL, AWS Glue, Amazon EMR, AWS Batch).
  • Handle ML-specific data by using MapReduce (for example, Apache Hadoop, Apache Spark, Apache Hive).

Domain 2: Exploratory Data Analysis Task Statement 2.1: Sanitize and prepare data for modeling.

  • Identify and handle missing data, corrupt data, and stop words.
  • Format, normalize, augment, and scale data.
  • Determine whether there is sufficient labeled data. o Identify mitigation strategies. o Use data labelling tools (for example, Amazon Mechanical Turk). Task Statement 2.2: Perform feature engineering.
  • Identify and extract features from datasets, including from data sources such as text, speech, images, and public datasets.
  • Analyze and evaluate feature engineering concepts (for example, binning, tokenization, outliers, synthetic features, one-hot encoding, reducing dimensionality of data). Task Statement 2.3: Analyze and visualize data for ML.
  • Create graphs (for example, scatter plots, time series, histograms, box plots).
  • Interpret descriptive statistics (for example, correlation, summary statistics, p-value).
  • Perform cluster analysis (for example, hierarchical, diagnosis, elbow plot, cluster size). Domain 3: Modeling Task Statement 3.1: Frame business problems as ML problems.
  • Determine when to use and when not to use ML.
  • Know the difference between supervised and unsupervised learning.
  • Select from among classification, regression, forecasting, clustering, recommendation, and foundation models. Task Statement 3.2: Select the appropriate model(s) for a given ML problem.
  • XGBoost, logistic regression, k-means, linear regression, decision trees, random forests, RNN, CNN, ensemble, transfer learning, and large language models (LLMs)
  • Express the intuition behind models.

Domain 4: Machine Learning Implementation and Operations Task Statement 4.1: Build ML solutions for performance, availability, scalability, resiliency, and fault tolerance.

  • Log and monitor AWS environments. o AWS CloudTrail and Amazon CloudWatch o Build error monitoring solutions.
  • Deploy to multiple AWS Regions and multiple Availability Zones.
  • Create AMIs and golden images.
  • Create Docker containers.
  • Deploy Auto Scaling groups.
  • Rightsize resources (for example, instances, Provisioned IOPS, volumes).
  • Perform load balancing.
  • Follow AWS best practices. Task Statement 4.2: Recommend and implement the appropriate ML services and features for a given problem.
  • ML on AWS (application services), for example: o Amazon Polly o Amazon Lex o Amazon Transcribe o Amazon Q
  • Understand AWS service quotas.
  • Determine when to build custom models and when to use Amazon SageMaker built-in algorithms.
  • Understand AWS infrastructure (for example, instance types) and cost considerations. o Use Spot Instances to train deep learning models by using AWS Batch.

Task Statement 4.3: Apply basic AWS security practices to ML solutions.

  • AWS Identity and Access Management (IAM)
  • S3 bucket policies
  • Security groups
  • VPCs
  • Encryption and anonymization Task Statement 4.4: Deploy and operationalize ML solutions.
  • Expose endpoints and interact with them.
  • Understand ML models.
  • Perform A/B testing.
  • Retrain pipelines.
  • Debug and troubleshoot ML models. o Detect and mitigate drops in performance. o Monitor performance of the model.

Compute:

  • AWS Batch
  • Amazon EC
  • AWS Lambda Containers:
  • Amazon Elastic Container Registry (Amazon ECR)
  • Amazon Elastic Container Service (Amazon ECS)
  • Amazon Elastic Kubernetes Service (Amazon EKS)
  • AWS Fargate Database:
  • Amazon Redshift Internet of Things:
  • AWS IoT Greengrass Machine Learning:
  • Amazon Bedrock
  • Amazon Comprehend
  • AWS Deep Learning AMIs (DLAMI)
  • Amazon Forecast
  • Amazon Fraud Detector
  • Amazon Lex
  • Amazon Kendra
  • Amazon Mechanical Turk
  • Amazon Polly
  • Amazon Q
  • Amazon Rekognition
  • Amazon SageMaker
  • Amazon Textract
  • Amazon Transcribe
  • Amazon Translate

Management and Governance:

  • AWS CloudTrail
  • Amazon CloudWatch Networking and Content Delivery:
  • Amazon VPC Security, Identity, and Compliance:
  • AWS Identity and Access Management (IAM) Storage:
  • Amazon Elastic Block Store (Amazon EBS)
  • Amazon Elastic File System (Amazon EFS)
  • Amazon FSx
  • Amazon S Out-of-scope AWS services and features The following list contains AWS services and features that are out of scope for the exam. This list is non-exhaustive and is subject to change. AWS offerings that are entirely unrelated to the target job roles for the exam are excluded from this list: Analytics:
  • AWS Data Pipeline Machine Learning:
  • AWS DeepRacer
  • Amazon Machine Learning (Amazon ML) Survey How useful was this exam guide? Let us know by taking our survey.