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A media streaming company stores its microservice code in AWS CodeCommit, and compliance requires that 100% of unit tests pass and detailed test reports be retained for 60 days and viewable by auditors; for approximately 15 commits per day to the main and develop branches, the team needs each commit to automatically build the service in a Linux build environment, run unit tests, and produce a navigable JUnit-style report without creating a custom UI, while supporting at least 8 concurrent builds and keeping the reports centrally accessible; which solution will meet these requirements?
A site reliability engineer using a Windows laptop must run a local PowerShell script to provision an application stack in the ap-northeast-2 Region within 10 minutes, with command-line-only access to a new AWS account that allows programmatic access but no console sign-in; what must the engineer set up on the laptop to perform the deployment?
A startup operates a two-node Amazon Redshift cluster across 2 Availability Zones for analytics and needs to create an AWS CloudFormation custom resource backed by an AWS Lambda function (256 MB memory, 45-second timeout) to apply additional database configuration during stack creation; the Lambda function must connect to the Redshift cluster using the cluster’s admin user credentials (username set to dw_admin) that are also provisioned at deployment—what is the MOST secure way to provide these credentials to the Lambda function while supplying them to the Redshift cluster?
A company runs a nationwide smart-thermostat platform where device firmware sends telemetry and commands through an existing Amazon API Gateway REST API that invokes multiple AWS Lambda functions for validation and routing. The engineering team has built updated Lambda code with new rule-processing features and needs to test exactly 5% of incoming device requests (about 12,000 requests per hour) for 48 hours without impacting the remaining traffic or changing client behavior, and they want the approach with the least ongoing operational work and minimal API changes; which solution meets these requirements with the least operational effort?
A ride-sharing company is building an internal console that aggregates trip and payment data from 25 partner services into one dashboard. The team has automated an OAuth onboarding workflow that retrieves API client credentials (client_id and client_secret) from each partner. During stack updates, an AWS CloudFormation custom resource invokes an AWS Lambda function that fetches or refreshes those credentials. The developer needs a solution to persist the retrieved credentials with minimal operational overhead while keeping them secure at rest and in transit. Which solution will meet these requirements in the most secure way?
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A fintech startup runs a payment-processing AWS Lambda function triggered by Amazon EventBridge; during a 30-minute flash sale in us-west-2, Amazon CloudWatch shows the Throttles metric spiking to 900 per minute while the account-level concurrent executions quota is 1,000 and another critical Lambda has 800 reserved concurrency, so the team wants the MOST operationally efficient actions to reduce throttling for the payment function without re-architecting the workload (Choose two).
A media company ingests video playback telemetry into an Amazon Kinesis Data Streams stream from its web player, and an AWS Lambda function that is triggered by the stream logs and processes each playback event as structured JSON. An operational review shows that some events have playbackDurationSeconds set to 0. A developer must build a dashboard that shows how many unique viewerIds are impacted each day (grouped in 1-day periods); what should the developer do to implement the dashboard?
A real-time ticketing web app runs on an Auto Scaling group of 6 Amazon EC2 instances behind an Application Load Balancer, keeps user cart and login state in memory per client (up to 64 KB per session) with 1,500 writes/s and 1,500 reads/s, must survive sudden instance termination or scale-in events without losing any session data, recover within 1 second, and remain highly available across multiple AZs—what should the developer do to ensure sessions are not lost if an EC2 instance fails?
An online ticketing platform is launching a new serverless notification service with 8 AWS Lambda functions, one Amazon API Gateway HTTP API, and one Amazon DynamoDB table that must be deployed to dev and prod via automation with less than 100 lines of deployment code, support a 10% canary for 5 minutes with automatic rollback, and provide the least operational overhead for building and deploying both the functions and their infrastructure—what method best meets these requirements?
A sports analytics startup runs a latency‑sensitive leaderboard microservice on Amazon ECS using the Amazon EC2 launch type across two Availability Zones and needs to migrate the workload to Amazon ECS on AWS Fargate with near‑zero disruption; during a blue/green cutover, the developer must configure the cluster’s capacity providers so that on‑demand Fargate tasks launch by default (ensuring at least 1 task runs on on‑demand) and FARGATE_SPOT is used only for overflow, while avoiding any API calls that attempt to create AWS‑owned capacity providers; which solution achieves the migration with the least downtime?
Study period: 1 month
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Study period: 2 months
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Study period: 1 month
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Study period: 2 months
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Study period: 2 months
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