On May 17, 2026, Publickey reported: AWS Previews AWS Interconnect - multicloud to Directly Link with Oracle Cloud via Dedicated Private Networks, Following Google Cloud Integration. AWS Interconnect - multicloud is a new service establishing dedicated direct links between AWS and Oracle Cloud over a private network that bypasses the public internet. With Google Cloud connectivity already available, the addition of Oracle Cloud largely completes a private mesh across the top three cloud providers.
From the standpoint of designing cloud infrastructure for mid-sized enterprises in custom engagements, this represents a practical solution for an era where companies can no longer remain confined to a single cloud. Building on our previous coverage of AWS DevOps Agent Multicloud AIOps and Cloudflare Autonomous Agent Account Custom Development, it is now possible to re-architect governance for cross-cloud collaboration starting directly from the physical network layer. This article outlines how to design and operate multicloud private connections for clients.
Why Mid-Sized Companies Seek Multicloud Private Interconnections
| Structure | Single Cloud | Multicloud via Public Internet | Private Multicloud |
|---|---|---|---|
| Vendor Lock-in | High | Medium | Low |
| Data Transfer Fees | Inexpensive within cloud | High between clouds | Dedicated line rates (fixed) |
| Latency | Small | Fluctuates between 50 and 200 ms | Stable between 5 and 30 ms |
| Security Audits | Straightforward | Complex NAT and firewall design | Dedicated circuits + audit logs |
| Compliance | Single trail | Difficult to justify over public networks | Easy to justify over private networks |
| Accountability During Outages | Cloud provider responsibility | Unclear routing responsibility | Clearly defined under dedicated circuit contracts |
In other words, a hybrid deployment where mid-sized firms run business systems on AWS, core databases on Oracle, and AI/analytics on Google becomes a pragmatic reality across auditing, security, and cost.
Three Structural Shifts Brought by Multicloud Private Connectivity
Shift 1: Moving from Unpredictable Data Transfer Fees to Fixed-Rate Dedicated Lines
Cross-cloud egress fees can swing by two to tenfold from month to month. Dedicated connections carry fixed pricing, allowing them to be factored reliably into business plans.
Shift 2: Moving from VPN and NAT Topologies to Direct Private Links
Previously, architectures relied on combinations of site-to-site VPNs and NAT gateways, resulting in complex operations. Dedicated circuits can be configured with an experience similar to VPC peering.
Shift 3: Moving from Audit Gaps to Deterministic Routing Trails
Audits in financial, medical, and public sectors scrutinize whether records traversed the public internet. Private dedicated circuits demonstrate that data physically bypassed public paths.
Five Phases of Designing Multicloud Private Connectivity for Clients
Phase 1: Existing Cloud Architecture Inventory Audit (2 Weeks)
We map out the client's entire footprint across AWS, GCP, Azure, Oracle Cloud, and on-premises environments, detailing traffic flows, data transfer volumes, and required SLAs.
Phase 2: Routing Architecture Design (3 to 4 Weeks)
- AWS Direct Connect / AWS Interconnect - multicloud
- Google Cloud Interconnect
- Oracle FastConnect
- Carrier-neutral IX design via Equinix and Megaport
Combining these, we create redundant architectures addressing route duplication, single points of failure, and future scalability.
Phase 3: Implementation and Routing Validation (4 to 6 Weeks)
We execute BGP routing controls, AS path tuning, failover testing, and validation of encryption options such as MACsec.
Phase 4: Audit Logging Infrastructure Setup (3 to 4 Weeks)
We aggregate VPC Flow Logs, Cloud Logging, and Oracle VCN logs to consolidate routing audit trails into monitoring platforms such as Splunk, Datadog, or Looker Studio.
Phase 5: Monthly Network Reviews (Ongoing)
Each month, we report on path availability, latency, bandwidth utilization, costs, and incident events to client leadership.
Standard technology stack set for custom development
| Layer | Recommended technology | Alternative |
|---|---|---|
| AWS Side | Direct Connect / Interconnect - multicloud | Transit Gateway |
| GCP Side | Cloud Interconnect / Cross-Cloud Interconnect | Cloud VPN |
| Oracle Side | FastConnect | IPsec VPN |
| Carrier-Neutral IX | Equinix Fabric / Megaport | NTT XePhion |
| Routing | BGP + Route Policy | Static |
| Encryption | MACsec | IPsec |
| Auditing | VPC Flow Logs + Splunk | Datadog Network |
This also provides the foundation for scaling enterprise AI beyond a single cloud, building on concepts discussed in Claude Platform on AWS Custom Enterprise AI.
Which projects need this and which do not
| Projects requiring this | Projects not requiring this |
|---|---|
| Utilizes two or more clouds in operations | Single cloud only |
| 1 TB+ monthly cross-cloud data transfer | Under 100 GB monthly transfer |
| Financial, healthcare, or public-sector compliance | Internal statistics only |
| Core system runs on Oracle | Oracle not used |
| Building BCP/DR in an alternate cloud | BCP fully contained within a single cloud |
Six clauses to include in client contracts
| Clause | Details | What the client should verify |
|---|---|---|
| Target Routes | List of cloud combinations | Liability outside scope |
| SLA | 99.95%, 99.99%, etc. | Remedies for SLA misses |
| Bandwidth Ceiling | Monthly transfer volume / bursting | Overage rates |
| Failover Recovery Time | RTO of 5 minutes or less, etc. | Executive agreement |
| Dedicated Circuit Ownership | Client account / custom development firm account | Contract continuity upon termination |
| Handover upon contract termination | IaC + routing configurations | Copyright and intellectual property attribution |
Estimated Client ROI (Assuming AWS + GCP + Oracle Multicloud with 50 TB Monthly Transfer)
| Item | Via Public Internet | Private Connectivity | Difference |
|---|---|---|---|
| Monthly egress cost | 4.8M JPY | 1,300,000 yen | -3.5M JPY |
| Average cross-cloud latency | 120ms | 18ms | -102ms |
| Annual incident count | 14 incidents | 3 incidents | -11 incidents |
| Annual audit effort | 180h | 40h | -140h |
| BCP drill success rate | 70% | 98% | +28pt |
| Annual benefit | — | — | Approximately 42M to 55M JPY |
Because the reduction in egress fees alone is substantial, the design and operational costs in this space often yield a short estimated payback period. However, since dedicated line pricing varies widely based on bandwidth, facility locations, and IX providers, the actual return on investment should be estimated based on your company's historical transfer volumes.
Five common pitfalls
Pitfall 1: Ambiguity in Dedicated Circuit Ownership
Whether circuits are contracted under the client or the development partner changes offboarding risks. As a rule, we recommend contracting under the client's name.
Pitfall 2: Failing to Provision Bandwidth for Future Needs
If bandwidth contracts do not anticipate two-year growth projections, bottlenecks will emerge within three months.
Pitfall 3: Consolidating into a Single IX Facility
Routing through multiple IX hubs—such as Tokyo, Osaka, and Singapore—should be mandatory.
Pitfall 4: Relying Solely on Default BGP for Route Redundancy
Failing to explicitly architect AS paths, MED, and local preference values leads to unintended traffic routing.
Pitfall 5: Omitting Audit Logging during Initial Architecture
The moment an auditor requests proof of the network transit path, missing logs will stall the audit. Integrate VPC Flow Logs and consolidated logging systems from the initial design phase.
90-day action plan
| Week | Action |
|---|---|
| Week 1〜2 | Current inventory audit + finalizing cloud combinations |
| Week 3〜6 | Routing design + contracting procedures (dedicated line lead time) |
| Week 7〜10 | Provisioning + BGP validation + failover testing |
| Week 11〜13 | Audit log consolidation + monthly review setup |
Summary: Custom Network Design in the Era of the Three-Cloud Private Mesh
With Oracle Cloud support in AWS Interconnect - multicloud, the private interconnect mesh across AWS, GCP, Oracle, and Azure is practically complete. For teams managing cloud infrastructure for mid-sized enterprises, a development partner capable of delivering end-to-end designs across multicloud, private networking, and audit compliance becomes a key competitive differentiator.
Multicloud private connectivity projects vary widely in approach and scale depending on cloud combinations, bandwidth, IX locations, and audit requirements. Whether you are facing escalating cross-cloud egress fees, financial audit scrutiny over internet routing, or a need to build BCP across another cloud, we provide tailored quotes based on your specific requirements. Please feel free to reach out via our inquiry form.
Sources
- AWS Previews AWS Interconnect - multicloud to Directly Link with Oracle Cloud via Dedicated Private Networks, Following Google Cloud Integration (Publickey)
- AWS DevOps Agent Multicloud AIOps (GH Media)
- Claude Platform on AWS Custom Enterprise AI (GH Media)
- Cloudflare Autonomous Agent Account Custom Development (GH Media)
