Domain 4.2: Compute Cost Optimization

A company runs a steady-state web application on Amazon EC2 instances. The compute requirements are consistent and predictable, and the company plans to run the application for the next 3 years. The company wants to maximize cost savings but needs the flexibility to change instance families (e.g., from compute-optimized to memory-optimized) if the application architecture changes. Which pricing model should they choose?

A data science team needs to run a massive data processing job that will take approximately 4 hours to complete. The job can be interrupted and resumed without losing progress. Which Amazon EC2 pricing option is the MOST cost-effective for this workload?

A company has hundreds of Amazon EC2 instances. The finance team suspects that many instances are over-provisioned (e.g., running on m5.2xlarge when a t3.medium would suffice). Which AWS service provides automated recommendations to right-size these instances based on historical utilization metrics?

A company has a serverless application using Amazon API Gateway and AWS Lambda. The application is invoked millions of times per day, and the AWS bill is higher than expected. The solutions architect notices that the Lambda function execution time is very fast, but the API Gateway costs are dominating the bill. Which TWO strategies can reduce the overall cost of this architecture? (Select TWO.)

A company runs a batch processing job every night that takes 4 hours to complete. The job can be interrupted and resumed without issues. What is the MOST cost-effective EC2 pricing model for this workload?

A company has a steady-state workload running on EC2 instances. They want to commit to a 1-year term to reduce costs. They know they will need a specific amount of compute power, but they might change instance families (e.g., from M5 to C5) or operating systems during the year. Which TWO purchasing options provide the necessary flexibility? (Select TWO.)

A company wants to be alerted via email whenever their monthly AWS spending is forecasted to exceed $1,000. Which AWS service should they use?

A company has hundreds of EC2 instances. They suspect many instances are over-provisioned (e.g., running on m5.xlarge when t3.medium would suffice). Which AWS service provides machine learning-driven recommendations to right-size these instances?

A company runs a batch processing workload on Amazon EC2. The workload can be interrupted and resumed without data loss. The company wants to minimize compute costs. Which TWO strategies should be used? (Select TWO.)

A company has a steady-state web application running on EC2 instances. They plan to migrate some of these instances to AWS Fargate in the next 6 months. They want to reduce compute costs now but need pricing flexibility to apply the discount to Fargate later. What should they purchase?

A company has hundreds of EC2 instances. They suspect many instances are over-provisioned and want a service that uses machine learning to analyze historical CPU, memory, and network metrics to recommend optimal instance types. Which service should they use?

A company runs a batch processing job every night that takes about 3 hours to complete. The job runs on Amazon EC2 instances. The workload is fault-tolerant and can be interrupted and resumed without issues. <br/><br/>Which EC2 pricing model will provide the MOST cost savings?

A company has a steady-state web application running on Amazon EC2 instances. The application runs 24/7 and the company plans to keep it running for the next 3 years. They want to reduce compute costs as much as possible. They also want the flexibility to change instance families (e.g., from M5 to C5) if the application requirements change. <br/><br/>Which TWO purchasing options should they consider? (Select TWO.)

A company has a fleet of Amazon EC2 instances. They want to ensure they are not over-provisioning resources. They need a service that analyzes historical CPU, memory, and network utilization to provide recommendations for right-sizing the instances. <br/><br/>Which AWS service should they use?

A company is designing a new application that will use AWS Lambda. The functions will be invoked millions of times per day. The solutions architect wants to optimize the cost of running these Lambda functions. <br/><br/>What is the MOST effective way to reduce Lambda costs?

A company wants to migrate their on-premises virtual machines to AWS. They want a tool that will automatically discover their on-premises servers, analyze their utilization, and recommend the most cost-effective Amazon EC2 instance types. <br/><br/>Which AWS service should they use?

A company runs a batch processing job every night. The job takes 3 hours to complete. The workload is fault-tolerant and can be interrupted and resumed without issues. What is the MOST cost-effective EC2 pricing model for this workload?

A company has a steady-state workload running on EC2 instances. They want to commit to a 1-year term to reduce costs. They need the flexibility to change instance families (e.g., from m5 to c5) and operating systems during the term. Which TWO pricing models provide this flexibility? (Select TWO.)

A company has hundreds of EC2 instances. The finance team noticed that EC2 costs are very high. They suspect many instances are over-provisioned. Which AWS service provides machine learning-backed recommendations to right-size EC2 instances?

A company runs a batch processing workload on Amazon EC2. The workload can be interrupted and resumed without any data loss. The processing jobs take a few hours to complete and the company wants to minimize compute costs.<br/><br/>Which EC2 pricing model should be used?

A company has a steady-state workload running on EC2 instances. They want to commit to a 3-year term to reduce costs. However, they know they will need to change instance families (e.g., from M5 to C6g) and operating systems over the next 3 years.<br/><br/>Which pricing model provides the highest discount while allowing these changes?

A startup is deploying a containerized application using Amazon ECS. The application experiences unpredictable traffic spikes. The team is small and wants to minimize the operational overhead of managing underlying EC2 instances, while only paying for the exact compute resources the containers use.<br/><br/>Which ECS launch type should they use?

A company has a script that runs for 5 minutes every night at midnight to clean up database records. Currently, the script runs on a t3.micro EC2 instance that is left running 24/7.<br/><br/>What is the MOST cost-effective way to run this script?

A company runs a batch processing job on Amazon EC2 every night. The job takes about 3 hours to complete. The workload is fault-tolerant and can be interrupted and resumed without issues. Which EC2 pricing model provides the MAXIMUM cost savings for this workload?

A company has a predictable, steady-state workload running on EC2 instances 24/7. They want to reduce costs and are willing to commit to a 3-year term. They also want the flexibility to change instance families (e.g., from M5 to C5) during the term. Which pricing model should they choose?

A company wants to optimize the costs of their existing EC2 instances. They suspect many instances are over-provisioned (e.g., using an m5.4xlarge when an m5.large would suffice). Which TWO AWS services can help identify these over-provisioned resources? (Select TWO.)