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Infrastructure
Kubernetes vs Lambda
Container orchestration versus serverless functions - comparing operational models, cost, and fit for modern workloads.
Option A
Kubernetes
Option B
AWS Lambda
Head to Head
Detailed Comparison
Pros, cons, and ideal use cases for each option
A
Kubernetes
Open-source container orchestration platform that runs anywhere. Used in platform engineering engagements.
Pros
- +Portable across clouds - see AWS vs GCP
- +Predictable cost at steady-state load
- +Powerful primitives for stateful workloads
- +Massive ecosystem of operators
- +Fine control over networking and storage
Cons
- -Operational overhead
- -Steep learning curve
- -Cost complexity if poorly utilized
Best For
- •Steady-state workloads
- •Multi-region deployments
- •Stateful services and data systems - see the data pipeline blueprint
- •Teams with platform engineering capacity
B
AWS Lambda
Serverless compute that runs code in response to events with zero infrastructure management. Excellent for API endpoints and event handlers.
Pros
- +Zero infrastructure management
- +Pay-per-invocation pricing
- +Automatic scaling
- +Native integration with AWS services
- +Fast to ship MVPs - see the MVP service
Cons
- -Cold starts for some runtimes
- -Execution time limits (15 min max)
- -Vendor lock-in to AWS
- -Costly at very high steady throughput
Best For
- •Event-driven workloads - see the event-driven playbook
- •Spiky or unpredictable traffic
- •Glue code between services
- •Small teams shipping fast
The Verdict
Lambda for spiky workloads, fast iteration, and small teams; Kubernetes for steady-state, stateful, or portable workloads. Many production systems use both. Start a project for an architecture review.
Decision Making
Key Considerations
Questions to help you make the right choice
What's your traffic profile - spiky or steady?
How important is portability across clouds?
Do you have platform engineering capacity?
Review the serverless tradeoffs insight
Need help deciding?
I can help you evaluate these options in the context of your specific project requirements and constraints.
Discuss Your ProjectInfrastructure
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