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STEP ON IT! Rapid Event-Based AWS Cost Control With Step Functions Damien Jones (he/him) AWS Consultant @ Steamhaus 2025-09-25 AWS Community Day Summit

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AWS ACCOUNT BILLS CLIENT EMPLOYER MINE!

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LOL ROFL LMAO ETC

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NOPE

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AWS STEP FUNCTIONS

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STEP FUNCTION FEATURES ORCHESTRATOR INTEGRATOR OBSERVER

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AWS STEP FUNCTIONS STANDARD EXPRESS

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BUT FIRST Hi.

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AWS Consultant​ Content Creator​ AWS Community Builder​ Steam h au s UK amaz o n web s h a r k .c o m Data Categ or y AWS User Group Leader Lancash ir e UK

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DATA INGESTION PIPELINE

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DATA INGESTOR SOURCE TARGET

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DATA INGESTOR SOURCE DATA INGESTOR TARGET

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AWS LAMBDA FUNCTION AMAZON S3 BUCKET API / DATABASE

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ISSUES PROCESS DUPLICATION COMPUTE & STORAGE COSTS DATA SOURCE ISSUES

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STEP FUNCTION CHOICE STATE

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AWS LAMBDA FUNCTION AMAZON S3 BUCKET API / DATABASE

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NO S3 DATA FOUND = CALL API

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S3 DATA FOUND = NOTIFY USER

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SAVES MONEY ON… COMPUTE STORAGE DATA SOURCE

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ALSO WORKS WITH… DYNAMODB RDS NON-AWS DATABASES

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JOB CHAIN

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AMAZON ECS TASK

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OVERNIGHT PROCESS CHAIN A B C

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SEQUENTIAL CALLS A B C

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UH OH A B C

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DOUBLE UH OH A B C

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FAILURE ON B ON CALL TRIGGERED TASK C NEVER STARTS DOWNSTREAM IMPACT

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COST IMPACT ON CALL PAYMENTS BUSINESS DISRUPTION CUSTOMER DETRIMENT

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SEQUENTIAL CALLS A B C

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STEP FUNCTION PARALLEL STATE

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STEP FUNCTION PARALLEL WORKFLOW

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ISSUE ON B

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ISSUE ON B

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TRY-CATCH LOGIC

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SAVES MONEY ON… COMPUTE INCIDENT MANAGEMENT BUSINESS CONTINUITY

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STOPPING ABANDONED JOBS

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WORKS WITH… AMAZON SAGEMAKER AWS GLUE AMAZON EC2

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COSTS: 2024 H1

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COSTS: 2024 JUNE

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COST & USAGE: API OPERATION

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COST: API OPERATION – GLUE INTERACTIVE SESSION

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COST DRIVER #1: OPEN SESSIONS

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COST DRIVER: ACTIVE SESSION

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COST DRIVER: ACTIVE SESSION

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COST DRIVER #2: MULTIPLE SESSIONS

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COST DRIVER: MULTIPLE SESSIONS MANY TABS MANY SESSIONS MANY BILLABLE RESOURCES!

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THE CAUSE

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COST DRIVER: ACTIVE SESSION

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STEP FUNCTION WAIT STATE

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STEP FUNCTIONS WORKFLOW

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ARCHITECTURE DIAGRAM

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ARCHITECTURE DIAGRAM

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ARCHITECTURE DIAGRAM

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ARCHITECTURE DIAGRAM

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STEP FUNCTION DEMO

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GLUE INTERACTIVE SESSIONS 2024 H2

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OTHER USES: PERFORM OTHER ACTIONS EMAIL & SLACK NOTIFICATIONS BESPOKE LOGGING TRIGGER SEPARATE WORKFLOW

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SUMMARY

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THANK YOU Me & Session Resources UG Lancashire