Understand serverless architecture, managed services, event-driven design, and operational tradeoffs.

Learn Lambda functions, handlers, runtimes, execution roles, versions, aliases, and invocation.

Connect Lambda to AWS services and understand polling, push, batch, and event-driven invocation models.

Manage Lambda runtime configuration, environment variables, memory, timeout, ephemeral storage, and architecture.

Use immutable Lambda versions and aliases for controlled releases and environment routing.

Package shared libraries and runtime components with Lambda layers.

Understand reserved concurrency, provisioned concurrency, throttling, scaling behavior, and downstream protection.

Design retries, dead-letter destinations, failure handling, and idempotent Lambda processing.

Use Lambda destinations to route asynchronous success and failure outcomes.

Learn API Gateway APIs, resources, methods, integrations, stages, and deployments.

Connect API Gateway routes and methods to Lambda functions securely.

Secure APIs using IAM authorization, Lambda authorizers, JWT authorization, and resource policies.

Manage API stages, deployments, variables, throttling, and environment separation.

Control API traffic with throttling, quotas, API keys, and usage plans where applicable.

Use DynamoDB as a scalable serverless data store for Lambda applications.

Use DynamoDB Streams to trigger Lambda from database changes.

Learn queues, messages, visibility timeout, retention, long polling, and dead-letter queues.

Design failure isolation and redrive workflows with SQS dead-letter queues.

Use SNS topics for pub/sub fan-out, notifications, and application integration.

Combine SNS and SQS to build durable, independently scalable event consumers.

Learn event buses, event patterns, rules, targets, schedules, and AWS service events.

Use custom event buses to separate application and domain events.

Connect event sources directly to targets with filtering, enrichment, and controlled integration.

Build serverless workflows using state machines, tasks, choices, retries, catches, and parallel execution.

Implement retry, catch, timeout, and failure paths in serverless workflows.

Process collections and independent branches concurrently using Map and Parallel states.

Integrate APIs with Step Functions for synchronous and asynchronous workflow initiation.

Design loosely coupled systems using events, queues, functions, and workflows.

Design serverless consumers to safely process duplicate messages and events.

Apply least privilege, resource policies, execution roles, and secure service-to-service permissions.

Monitor Lambda, API Gateway, queues, workflows, and event pipelines using CloudWatch.

Optimize Lambda initialization, package size, memory, runtime, and provisioned concurrency.

Understand when Lambda functions need VPC access and the implications for private resources and networking.

Schedule serverless operations and invoke supported targets using managed schedules.

Move data between supported SaaS applications and AWS services using managed flows.

Design secure event and API integration between AWS accounts.

Deploy Lambda and serverless APIs safely using versions, aliases, stages, and automated pipelines.

Control serverless costs using right-sized functions, efficient APIs, queues, storage, and observability.

Design for retries, backpressure, buffering, graceful failure, and multi-service resilience.

Develop a systematic approach to diagnosing Lambda, API Gateway, queues, events, and workflows.

Combine Lambda, API Gateway, DynamoDB, EventBridge, SQS, SNS, Step Functions, security, monitoring, and deployment into a production-style application.