Description

This curriculum spans the technical and operational rigor of a multi-workshop migration engagement, addressing the same serverless adoption challenges seen in large-scale legacy modernization programs, from event-driven redesign and security hardening to cost governance and production observability.

Module 1: Assessing Serverless Suitability for Legacy Systems

Evaluate monolithic application components for functional decomposition based on transactional boundaries and state dependencies.
Identify stateful services that resist serverless migration due to reliance on local disk storage or long-lived connections.
Analyze existing authentication and session management mechanisms for compatibility with stateless execution environments.
Compare cold start tolerance across user-facing versus backend batch processing workloads.
Map legacy scheduling logic (e.g., cron jobs) to event-driven patterns using cloud-native triggers and queues.
Conduct cost modeling for intermittent workloads to determine break-even points between VMs and function-based billing.

Module 2: Designing Event-Driven Workflows

Choose between push and pull event models when integrating with message brokers like SQS, EventBridge, or Pub/Sub.
Implement idempotency in function logic to handle duplicate messages from retry mechanisms in distributed queues.
Define event schema standards and enforce versioning using schema registries to prevent consumer breakage.
Structure asynchronous workflows with step functions or workflow engines to manage multi-stage processing with error branches.
Set concurrency limits on event consumers to prevent downstream system overload during traffic spikes.
Design dead-letter queues with monitoring alerts for failed event processing and root cause analysis.

Module 3: Security and Identity Management

Assign least-privilege IAM roles to functions instead of shared service accounts to limit blast radius.
Rotate and inject secrets via secure parameter stores or secrets managers instead of environment variables.
Enforce mutual TLS or signed URLs when exposing functions through API gateways to untrusted networks.
Implement VPC attachment selectively for functions requiring private subnet access, balancing latency and cost.
Log and audit function invocation events with CloudTrail or equivalent for compliance and forensic investigations.
Validate and sanitize all inbound event payloads to prevent injection attacks, especially from untrusted sources.

Module 4: Performance and Scalability Engineering

Configure provisioned concurrency to mitigate cold starts for latency-sensitive customer-facing APIs.
Optimize function package size by removing unused dependencies and leveraging layering for shared libraries.
Set appropriate memory allocation to balance CPU entitlement and cost under variable load.
Implement circuit breakers and bulkheads in function-to-service calls to prevent cascading failures.
Use connection pooling for database access within function lifecycle constraints to reduce handshake overhead.
Monitor execution duration metrics to identify functions nearing timeout thresholds and refactor accordingly.

Module 5: Data Management and State Handling

Select durable storage backends (e.g., S3, DynamoDB) for function output instead of ephemeral local storage.
Design retry strategies with exponential backoff for transient failures when writing to external data stores.
Use distributed locking mechanisms when multiple functions compete for shared resources or records.
Partition data in serverless databases based on access patterns to avoid hot keys under high concurrency.
Implement eventual consistency models where strong consistency would impede scalability or increase latency.
Cache frequently accessed reference data in managed Redis or similar services to reduce backend load.

Module 6: Observability and Operational Control

Correlate logs, metrics, and traces using a unique request ID propagated across function boundaries.
Instrument functions with custom metrics for business-relevant KPIs, not just infrastructure performance.
Configure structured logging in JSON format to enable automated parsing and alerting in SIEM tools.
Set dynamic alert thresholds based on percentiles (e.g., p95 duration) rather than static averages.
Use distributed tracing to identify bottlenecks in multi-function workflows and third-party dependencies.
Archive and index function logs in centralized storage with retention policies aligned to compliance requirements.

Module 7: CI/CD and Deployment Governance

Implement canary deployments using traffic shifting to validate function behavior with real-world loads.
Enforce pipeline gates that block deployments if function permissions exceed predefined policy templates.
Version function code and configuration as immutable artifacts to ensure reproducible deployments.
Automate rollback procedures based on health checks and metric anomalies post-deployment.
Scan function packages for vulnerabilities and license compliance during build stages.
Manage environment-specific configurations through parameter stores, not hardcoded values or branches.

Module 8: Cost Management and Financial Governance

Tag functions by team, project, and environment to enable granular cost allocation and chargeback reporting.
Right-size function memory and timeout settings based on historical utilization data to eliminate waste.
Implement auto-remediation for functions that exceed predefined cost thresholds over a billing cycle.
Negotiate enterprise agreements for high-volume services (e.g., API Gateway, data transfer) to reduce per-call costs.
Compare total cost of ownership between serverless and containerized alternatives for long-running processes.
Monitor and alert on idle functions with low invocation rates to identify candidates for decommissioning.