Oracle Cloud Infrastructure 2025 Architect Professional (1Z0-997-25)

What you will practice: Design and justify OCI Professional Architecture Mindset and Landing Zone Design decisions for enterprise OCI deployments, covering Designing a production landing zone, Tenancy layout strategy, Compartment model (by BU/app/env) and policy scoping intent.

• Designing a production landing zone
• Tenancy layout strategy (enterprise boundaries, shared services, environment separation)
• Compartment model (by BU/app/env) and policy scoping intent
• Resource tagging strategy (ownership, cost center, environment, compliance classification)
• Operational governance
• Guardrails: least privilege, standard patterns, baseline logging/monitoring
• Cost governance patterns (budgets/chargeback mindset, tag-based reporting)
• Reference architectures
• Multi-tier enterprise patterns (web/app/data separation with strict network controls)
• Architecture tradeoffs: simplicity vs resilience vs cost

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Architecting Cloud-Native Solutions on OCI decisions for enterprise OCI deployments, covering Microservices and platform patterns, Microservices architecture design choices, Containerization strategy and operational model.

• Microservices and platform patterns
• Microservices architecture design choices (service boundaries, scaling domains)
• Containerization strategy and operational model
• DevOps alignment for CI/CD and release governance
• Serverless and API management
• Serverless functions design/use cases
• API Gateway usage patterns (routing, authentication placement, throttling mindset)
• Infrastructure as Code (IaC)
• IaC approach for repeatable provisioning (modules/variables/environment parity)
• Change control practices: plan/apply, drift awareness, rollback thinking

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Core OCI Networking for Enterprise Architectures decisions for enterprise OCI deployments, covering VCN and subnet architecture, CIDR planning for growth and future connectivity, Public vs private subnet placement and exposure control.

• VCN and subnet architecture
• CIDR planning for growth and future connectivity
• Public vs private subnet placement and exposure control
• Routing and egress design
• Route table intent, next-hop selection, and isolation boundaries
• Secure outbound patterns (private workloads with controlled egress)
• Security controls in networking
• Security lists vs NSGs (where to enforce rules and why)
• Segmentation patterns for multi-tier applications
• Connectivity building blocks
• Hybrid connectivity patterns (on-prem to OCI)
• VCN peering patterns (local/remote) and routing constraints

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify High Availability Architecture and Fault Isolation decisions for enterprise OCI deployments, covering Designing for availability, Placement strategies across fault domains/availability domains, Redundancy patterns at compute, network, and data layers.

• Designing for availability
• Placement strategies across fault domains/availability domains
• Redundancy patterns at compute, network, and data layers
• Load balancing and traffic distribution
• Public vs private load balancing patterns
• Health-check design and failure handling
• Scaling and elasticity
• Horizontal vs vertical scaling decisions
• Capacity planning + autoscaling triggers and guardrails

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Disaster Recovery Design and Cross-Region Strategy decisions for enterprise OCI deployments, covering DR design fundamentals, RPO/RTO translation into technical choices, Backup and restore strategy.

• DR design fundamentals
• RPO/RTO translation into technical choices
• Backup and restore strategy (what is backed up, where, how often)
• Cross-region design
• Active/active vs active/passive concepts and tradeoffs
• Data replication approach selection based on workload criticality
• Operational DR
• Runbooks and DR drills (validation of recoverability, not just backups)
• Failover/failback orchestration mindset

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Security Solutions and Secrets/Key Automation decisions for enterprise OCI deployments, covering Secure multi-tier architecture, Network isolation + least privilege access patterns, Identity-first design: avoid hard-coded credentials.

• Secure multi-tier architecture
• Network isolation + least privilege access patterns
• Identity-first design: avoid hard-coded credentials
• OCI security services usage
• Security posture design: logging, alerting, auditability
• Vault and secrets management
• Implement and automate secrets management using OCI Vault
• Key management decisions (customer-managed vs provider-managed keys, rotation mindset)
• Secure automation
• Safe integration of secrets into pipelines and runtime without credential leakage

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Implementing and Operating Databases in OCI decisions for enterprise OCI deployments, covering Database selection and deployment, Evaluate and implement database options including Autonomous and Base DBs, Architecture decisions for performance,....

• Database selection and deployment
• Evaluate and implement database options including Autonomous and Base DBs
• Architecture decisions for performance, availability, and governance
• Performance and scalability
• Performance tuning mindset and capacity planning
• OCI Cache usage for app performance and scalability
• Operations and troubleshooting
• Monitoring and operational troubleshooting approach for DB services
• Backup/recovery integration into DR plans

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Multi-Cloud and Hybrid Architecture Design decisions for enterprise OCI deployments, covering Architecture evaluation, Evaluate multi-cloud solution architectures, Oracle Interconnect patterns.

• Architecture evaluation
• Evaluate multi-cloud solution architectures (drivers, risks, data gravity, latency, governance)
• Oracle Interconnect patterns
• Implement Oracle Interconnect for Azure and Oracle Database@Azure
• Implement Oracle Interconnect for Google Cloud and Oracle Database@Google Cloud
• Hybrid virtualization
• Design and implement hybrid cloud architecture with Oracle Cloud VMware Solution
• Identity, networking, and security alignment
• Cross-cloud identity alignment considerations (federation mindset)
• Routing, segmentation, and inspection model across environments

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Workload and Data Migration to OCI decisions for enterprise OCI deployments, covering Workload migration, Design and implement workload migration using Oracle Cloud Migrations, Cutover planning, rollback planning, validation steps.

• Workload migration
• Design and implement workload migration using Oracle Cloud Migrations
• Cutover planning, rollback planning, validation steps
• Database and data migration
• Implement and troubleshoot database and data migrations to OCI
• Minimizing downtime and preserving data integrity (migration runbooks)
• Post-migration hardening
• Security posture after migration (principals, secrets, exposure reduction)
• Performance verification and right-sizing

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.

What you will practice: Design and justify Observability, Operations, and Cost Optimization decisions for enterprise OCI deployments, covering OCI observability platform concepts, Metrics, logs, events, alarms: designing actionable signal chains, Alert routing and noise reduction principles.

• OCI observability platform concepts
• Metrics, logs, events, alarms: designing actionable signal chains
• Alert routing and noise reduction principles
• Operational excellence
• Incident response workflow using telemetry (correlation across layers)
• SLA/SLO-style thinking (availability and performance targets)
• Governance and cost optimization
• Enforce governance and cost optimization strategies for OCI services
• Tagging enforcement + budget monitoring mindset

Tip: After topic practice, do mixed sets under time pressure and review missed questions immediately.