AWS Certified Data Engineer: Associate (DEA-C01)

What it is

AWS Certified Data Engineer: Associate (exam code DEA-C01) validates that you can build and run data pipelines on AWS. According to the official page, it tests designing data models, managing data life cycles and ensuring data quality, along with ingestion, transformation, orchestration and applying programming concepts on AWS services.

Exam facts (as of 2026-09, from the official page)

• Format: 65 multiple choice or multiple response questions.
• Time: 130 minutes.
• Fee: USD 150. Taxes and currency conversion may apply in your country.
• Delivery: at a Pearson VUE test centre or online proctored.
• Languages: English, Japanese, Korean and Simplified Chinese.
• Validity: three years, then recertify by passing the current version.
• Recommended experience: the equivalent of two to three years in data engineering or data architecture and at least one to two years hands-on with AWS services.

Always confirm details on the official page before booking; exams are updated.

What to study

Expect scenario questions on choosing between services: S3 storage classes and partitioning, Glue jobs and the Data Catalog, Athena, Redshift, EMR, Kinesis Data Streams and Amazon Data Firehose, Lambda, Step Functions and Amazon MWAA, Lake Formation permissions, IAM, encryption with KMS, and monitoring with CloudWatch. Cost optimisation appears throughout.

Free preparation from AWS: the exam guide, official practice questions and courses on AWS Skill Builder, and the AWS documentation for each service.

Is it worth your time?

It can be, with the right expectations. A certification does not replace a portfolio, and hiring managers check that you can explain real work. It helps most when you are moving into data engineering from another role, when employers in your market list it in job ads, or when an employer pays for it. For a student with no experience, a well-documented AWS pipeline project usually matters more; the exam is a good second step that forces broad coverage.

Scam and fee warnings

Only book through AWS Certification and Pearson VUE. Avoid dumps that claim to be real exam questions: using them breaks the certification agreement and can get your certification revoked. Be wary of paid bootcamps that promise a job with the certificate.

Common questions

Do I need the Cloud Practitioner first? No, there are no prerequisites, though it is a gentle start if AWS is new to you.

How long does preparation take? It varies with experience. With hands-on AWS work, a few weeks of focused study is common; without it, build a project first.