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STEP ON IT!
Rapid Event-Based AWS Cost Control
With Step Functions
Damien Jones (he/him)
AWS Consultant @ Steamhaus
2025-04-24 London DevOps
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MY AWS ACCOUNT
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MY BILL
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LOL ROFL LMAO ETC
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NOPE
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AGENDA
WHY DID THIS
HAPPEN? WHAT DID I DO? HOW DID I BUILD IT?
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BUT FIRST
Hi.
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AWS Consultant Content Creator
Dog Dad
Steam h au s UK amaz o n web s h a r k .c o m
to this noodle
AWS Certified
x3
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AWS User Group Leader
AWS Community Builder
Lanca s h ir e UK
D ata Categ or y
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WHY DID THIS
HAPPEN?
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AWS GLUE
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COSTS: 2024 JUNE
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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 & USAGE: API OPERATION - TAX
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COST: API OPERATION – GLUE JOB RUN
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COST: API OPERATION – GLUE INTERACTIVE
SESSION
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COST & USAGE: API OPERATIONS
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COST & USAGE: API OPERATIONS
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WHAT’S AN
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
ONE TAB ONE SESSION
ONE BILLABLE
RESOURCE
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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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WHAT DID I DO?
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OPTION ONE:
PARAMETER ADJUSTMENT
Change the timeout value manually.
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OPTION TWO:
DENY PERMISSIONS
Stop anyone from starting a session.
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PERMISSION BLOCKING
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LOCAL SESSIONS
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LOCAL SESSIONS
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OPTION THREE:
EVENT-BASED AUTOMATION
Automate all the things.
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EVENT-BASED AUTOMATION
SOURCE BUS TARGET
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EVENT-BASED AUTOMATION
AWS GLUE
AMAZON
EVENTBRIDGE
AWS STEP
FUNCTIONS
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EVENT-BASED AUTOMATION
FAST RESILIENT SCALABILITY
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EVENT-BASED &
EVENT-DRIVEN
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JAMES EASTHAM
@SERVERLESSJAMES
Developer Advocate @ Datadog
Ex AWS
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EVENT-DRIVEN
SYSTEM
EVENT-BASED
SYSTEM
BUSINESS FOCUSED TECHNICAL FOCUSED
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EVENT-DRIVEN SYSTEMS
PIZZA COOKED REVIEW LEFT
BUSINESS EVENTS
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BIGGER OVEN
EVENT-DRIVEN SYSTEMS
PIZZA COOKED
MORE PIZZAS
BUSINESS EVENTS
+ =
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EVENT-DRIVEN SYSTEMS
REVIEW LEFT
FEEDBACK COSTS
REDUCED
BUSINESS EVENTS
CHEAPER REVIEW
PLATFORM
+ =
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EVENT-BASED SYSTEMS
SUCCESSFUL LOGIN
RELATIONAL
DATABASE WRITE
TECHNICAL EVENTS
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REMOVE LOGIN
REQUIREMENT
EVENT-BASED SYSTEMS
LOGIN SUCCESSFUL
TECHNICAL EVENTS
EASIER TO REVIEW
+ =
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RELATIONAL
DATABASE WRITE
EVENT-BASED SYSTEMS
TECHNICAL EVENTS
REARCHITECT
DATABASE
LESS DEVELOPER
OVERHEAD
+ =
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EVENT-DRIVEN
SYSTEM
EVENT-BASED
SYSTEM
LANGUAGE OF
BUSINESS
LANGUAGE OF
TECHNOLOGY
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HOW DID I
CREATE IT?
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ARCHITECTURE DIAGRAM
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ARCHITECTURE DIAGRAM
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ARCHITECTURE DIAGRAM
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ARCHITECTURE DIAGRAM 1-3
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GLUE CREATESESSION EVENT
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GLUE CREATESESSION EVENT
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ARCHITECTURE DIAGRAM
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ARCHITECTURE DIAGRAM 3-5
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EVENTBRIDGE RULE – EVENT PATTERN
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EVENTBRIDGE RULE – EVENT PATTERN
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EVENTBRIDGE RULE – INPUT TRANSFORMER
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EVENTBRIDGE RULE – INPUT TRANSFORMER
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ARCHITECTURE DIAGRAM
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ARCHITECTURE DIAGRAM STEP F
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WAIT
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STOP
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STOP
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STOP
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SNS
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STEP FUNCTIONS STUDIO
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DEMO: GLUE
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DEMO: GLUE
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DEMO: STEP
FUNCTION
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OUTCOMES
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GLUE INTERACTIVE SESSIONS 2024 H2
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ARCHITECTURE COSTS 2024 H2
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LIMITATIONS
REACTIVE SOLUTION
STILL SOME GLUE
COST
POTENTIAL
WORKFLOW COST
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OTHER APPLICATIONS:
STOP OTHER SERVICES
AMAZON
SAGEMAKER AMAZON EMR AMAZON EC2
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OTHER APPLICATIONS:
PERFORM OTHER ACTIONS
EMAIL & SLACK
NOTIFICATIONS BESPOKE LOGGING
TRIGGER SEPARATE
WORKFLOW
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SUMMARY
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AGENDA
FIND THE CAUSE
CONSIDER YOUR
OPTIONS BUILD A SOLUTION
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THANK YOU
Me & Session Resources AWS User Group Lancashire