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A customer wants a Well-Architected pillar for choosing efficient technologies and resources for a workload.
Which observation would best confirm that the intended cloud outcome is being achieved?
Performance efficiency concerns effective resource selection, adaptation and continued performance improvement.
Cost optimization focuses on spending that delivers business value, including usage visibility and demand matching.
The pillars are operational excellence, security, reliability, performance efficiency, cost optimization and sustainability, not individual AWS services.
Reliability addresses fault recovery, capacity to meet demand, and resilient operation.
A prospective customer worries about who guards physical AWS data-center buildings.
Which observation would best confirm that the intended cloud outcome is being achieved?
AWS is responsible for facilities, hardware and underlying infrastructure used to provide its cloud services.
AWS offers encryption features, but customers must choose appropriate configuration and manage access and key permissions.
The service provider operates the network infrastructure but customers determine network access rules for workloads.
AWS manages the execution infrastructure but cannot automatically enforce application business logic or secure customer code.
A regional booking portal cannot tolerate interruption when an individual computing facility loses power.
Which AWS concept, service, or approach best meets the need described?
Availability Zones are isolated fault locations within a Region and reduce dependency on one data-center location. For the described requirement, deploy across multiple Availability Zones within the AWS Region for higher availability.
AWS global infrastructure enables geographic reach and faster regional market entry while the business remains responsible for its application.
Regional AWS infrastructure lets customers choose appropriate geographic placement subject to service availability and compliance.
Provisioning through AWS APIs and consoles improves agility by reducing procurement delays for new environments.
A cloud learner asks which global infrastructure units are isolated for high availability inside a Region.
Which observation would best confirm that the intended cloud outcome is being achieved?
Availability Zones are separate fault-isolation locations within a Region.
Multiple instances sharing one AZ remain exposed to an AZ-wide event despite instance-level redundancy.
Edge locations bring cached content and network services closer to end users.
Edge locations serve nearby delivery needs; Availability Zones host fault-isolated regional workloads.
A department owns physical servers that require electricity, cooling and on-site staff.
Which observation would best confirm that the intended cloud outcome is being achieved?
A complete TCO comparison includes ongoing facility and maintenance expenses as well as hardware.
License ownership and eligible product rules determine whether a bring-your-own-license option is suitable.
Right-sizing reduces waste by matching provisioned resource size to the work performed.
Cloud consumption pricing can shift spending from equipment purchase to charges based on service usage.
A mobile backend wants programming-language integration rather than manual browser operations.
Which AWS concept, service, or approach best meets the need described?
AWS SDKs provide language-specific clients for application interactions with AWS APIs. For the described requirement, use an AWS SDK for the application's AWS service API integration.
AWS APIs can be called by scripts and tools to standardize supported tasks at scale.
The console offers a graphical interface appropriate for human-directed AWS service inspection.
Hybrid deployments combine local infrastructure with cloud services instead of requiring full relocation.
A department has many unused development resources and needs a structured cost review principle.
Which observation would best confirm that the intended cloud outcome is being achieved?
Cost optimization focuses on spending that delivers business value, including usage visibility and demand matching.
Selecting fit-for-purpose resources meets performance needs without automatically overprovisioning.
The security pillar focuses on protecting systems and data using appropriate identity and detection controls.
Operational excellence emphasizes runbooks, feedback, monitoring and continually refining operational processes.
A website wants to stop known malicious HTTP request patterns before they reach its application.
Which AWS concept, service, or approach best meets the need described?
AWS WAF evaluates layer-7 web requests using rules instead of replacing VPC network routing. For the described requirement, use AWS WAF web access control rules for supported HTTP and HTTPS applications.
GuardDuty analyzes supported data sources to identify suspicious activity rather than performing a general resource inventory.
Inspector identifies vulnerabilities and related exposure in supported compute resources.
Provider reports describe AWS controls, whereas application-specific obligations still need customer evidence.
A business faces potential volumetric attacks against a public AWS service endpoint.
Which AWS concept, service, or approach best meets the need described?
Shield is focused on denial-of-service defense whereas IAM evaluates principal permissions. For the described requirement, identify AWS Shield capabilities for DDoS threat protection.
WAF inspects HTTP requests with web ACL rules and complements rather than replaces network-layer controls.
Protective filters block matching traffic; detection services report suspicious activity for investigation.
AWS Marketplace lists third-party offerings and procurement options alongside AWS service integrations.
A graphics processing workload wastes time because the selected resource class does not fit its compute needs.
Which observation would best confirm that the intended cloud outcome is being achieved?
Performance efficiency concerns effective resource selection, adaptation and continued performance improvement.
Operational excellence emphasizes runbooks, feedback, monitoring and continually refining operational processes.
The pillars are operational excellence, security, reliability, performance efficiency, cost optimization and sustainability, not individual AWS services.
Operational failures from unsafe processes require process and automation improvement, not simply bigger resources.
A multinational provider wants independent regional placements to support regional continuity requirements.
Which observation would best confirm that the intended cloud outcome is being achieved?
Using different AWS Regions can reduce dependence on one geographic Region when application design supports recovery.
A Region is a geographic AWS area containing multiple isolated Availability Zones.
Edge locations bring cached content and network services closer to end users.
Multiple instances sharing one AZ remain exposed to an AZ-wide event despite instance-level redundancy.
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