đExam Guide: Cloud Practitioner
Domain 3: Cloud Technology & Services
đTask Statement 3.7
đŻ What Is This Task Testing?
You need to recognize common AWS services for:
- AI/ML and what each service is used for (SageMaker, Lex, Kendra)
- Analytics and when to use each service (Athena, Kinesis, Glue, QuickSight)
1) đ¤ AWS AI/ML Services
Amazon SageMaker
A managed service to build, train, and deploy machine learning models.
Use Amazon Sagemaker When:
- you need an end-to-end ML platform (data prep, training, tuning, deployment)
- you want to manage ML workflows without building all tooling yourself
âtrain a model,â âdeploy an ML model,â âML lifecycleâ â SageMaker.
Amazon Lex
A service for building chatbots and conversational interfaces (text and voice).
Use Amazon Lex When:
- you want a chatbot for customer support, internal help desk, or booking flows
- you need natural language understanding for conversation-style interfaces
âchatbot,â âconversational interface,â âvoice/text botâ â Lex.
Amazon Kendra
An intelligent search service for searching across large volumes of content (documents, knowledge bases).
Use Amazon Kendra When:
- you want enterprise search across documents and internal data sources
- you need more âmeaning-basedâ search than basic keyword matching
âsearch documents/knowledge base,â âenterprise searchâ â Kendra.
2) đşď¸ AWS Analytics Services
Ingestion â ETL â Query â Visualization
A helpful way to remember analytics services is by the stage they support.
Amazon Kinesis: Streaming Ingestion/Processing
A platform for real-time streaming data.
Use Amazon Kinesis When:
- you need to ingest or process data continuously (clickstreams, IoT telemetry, logs)
- you need near-real-time analytics
âreal-time streams,â âingest streaming dataâ â Kinesis.
AWS Glue: ETL and Data Integration
A managed service for ETL (extract, transform, load) and data preparation.
Use AWS Glue When:
- you need to clean/transform and move data between sources and targets
- you need a managed data integration/ETL service
âETL,â âtransform data,â âprepare data for analyticsâ â Glue.
Amazon Athena: Query Data in S3 Using SQL
A serverless query service that lets you analyze data in Amazon S3 using SQL.
Use Amazon Athena When:
- you want ad-hoc queries without managing servers
- your data is already in S3 and you want SQL-based analysis
âquery S3 with SQL,â âserverless interactive queriesâ â Athena.
Amazon QuickSight: Visualization / BI
A business intelligence service for dashboards and data visualization.
Use Amazon QuickSight When:
- you want interactive dashboards and reporting for stakeholders
- you need BI-style visual analytics
âdashboards,â âvisualize data,â âBI reportingâ â QuickSight.
âMatch the Serviceâ
- âBuild/train/deploy ML modelsâ â SageMaker
- âCreate a chatbotâ â Lex
- âSearch across documents/knowledge basesâ â Kendra
- âIngest streaming data in real timeâ â Kinesis
- âETL / data preparationâ â Glue
- âRun SQL queries directly on S3â â Athena
- âBuild dashboards and visual reportsâ â QuickSight
â Quick Exam-Style Summary
- AI/ML: SageMaker (ML platform), Lex (chatbots), Kendra (intelligent search).
- Analytics: Kinesis (streaming), Glue (ETL), Athena (SQL on S3), QuickSight (dashboards).
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