OCI Multicloud Architect Associate case studies
OCI Multicloud Architect Associate · Put your knowledge to work in context.
The Oracle Cloud Infrastructure 2025 Multicloud Architect Associate is an Oracle University certification exam, listed under code 1Z0-1123-25. It targets architects and senior engineers who design, connect, and operate workloads that span Oracle Cloud Infrastructure and at least one other hyperscale cloud. The OCI Multicloud Architect Associate case studies are 5 cases and about 4,949 words.
1Placing an Oracle E-Business Suite Estate While Azure Owns the Analytics Layer
Northwind Retail runs Oracle E-Business Suite 12.2 on-premises: a 14 TB database, 1,200 concurrent users across three plants, and a quarter-end batch window that must finish inside six hours. Azure is the company's strategic cloud - the data lake, Synapse, and the new AKS storefront all live there - and the board has committed to exiting the data centre in nine months.
900 words, about 5 min2Overlapping CIDRs, Two Hubs, and a Redundant Circuit That Made Things Worse
Contoso Financial has an OCI VCN of 10.20.0.0/16 in US East (Ashburn) hosting an Autonomous Database with a private endpoint and an OCI GoldenGate deployment. Its Azure estate in East US was built from the same IP plan and uses 10.20.0.0/16 for the hub VNet, with 10.20.16.0/20 assigned to AKS node pools and 10.20.32.0/20 to internal load balancers.
985 words, about 5 min3Four Thousand Federated Users and Three Hundred Accidental Admins
An insurer federates 4,000 employees from Microsoft Entra ID into a single OCI Identity Domain using SAML 2.0. The group mapping was configured during a 2021 proof of concept: every member of the Entra group All-OCI-Users maps to the OCI group Tenancy-Admins, because the original team could not get finer-grained policies approved in time.
934 words, about 5 min4RPO Five Minutes Without Dual Writes
Skyline Air operates a booking platform on Autonomous Transaction Processing in OCI Germany Central (Frankfurt), with the Java booking service on AKS in Azure West Europe. Peak load is 8,000 transactions per second, and a single reservation band makes six to nine database round trips.
1,036 words, about 5 min5Two Invoices, One Control Plane, and 38% Over Budget
Meridian Manufacturing runs three Exadata systems on Oracle Database@Azure in Azure East US 2, plus a legacy OCI tenancy in Frankfurt hosting two remaining applications. Annual cloud spend is about USD 2.4 million, and last year came in 38% over the approved budget.
1,094 words, about 5 min