About the Customer

The customer is one of Indonesia's leading multinational conglomerates, with a diverse business portfolio spanning forestry, palm oil, paper, heavy equipment, and property sectors. The company is also recognized as one of the largest newsprint paper producers in Southeast Asia. With large-scale and geographically distributed operations across Indonesia and international markets, the company heavily relies on stable and highly available application systems to support core business processes ranging from production to distribution. The company had already adopted AWS cloud infrastructure, with workloads previously running in the AWS Asia Pacific (Singapore) region.

Customer Challenge

The customer faced several strategic, operational, and regulatory challenges with their existing AWS infrastructure in the Singapore region:

Core problems:

• Data sovereignty and regulatory compliance — As an Indonesian multinational conglomerate, the company needed to comply with evolving Indonesian regulations requiring certain data to remain within Indonesia's geographic boundaries. Operating from the Singapore region created potential compliance exposure.
• Latency and performance — End-users, business units, and partner systems located in Indonesia experienced higher latency when connecting to applications hosted in Singapore, impacting user experience and operational efficiency across forestry, palm oil, and paper production systems.
• IP address dependency — The customer had numerous internal systems, third-party integrations, and legacy applications with hard-coded IP addresses across their 16 servers/instances. Changing IP addresses would require extensive reconfiguration across multiple business units and external partners, creating significant operational risk and migration complexity.
• Limited high availability architecture — While subnets were configured across multiple Availability Zones, workloads remained primarily deployed and running in a single AZ (AZ A). This created an asymmetric availability posture where most systems lacked true failover capability despite having multi-AZ networking.
• Critical applications needed active-active resilience — The customer's most critical applications required higher availability than the standard workload deployment model could provide.
• Geographic risk exposure — All workloads were concentrated in a single region (Singapore), creating regional concentration risk without disaster recovery capability in Indonesia.

Without addressing these challenges, the customer faced significant business risks:

• Regulatory non-compliance penalties — Potential fines, operational restrictions, and reputational damage with Indonesian regulators for data sovereignty violations
• Poor user experience — Higher latency for Indonesian users affecting productivity across all business units
• Migration complexity and downtime risk — Changing IP addresses would require months of reconfiguration across 16 servers and their dependent systems
• Availability gaps — Single-AZ workload concentration meant AZ-level failures could disrupt business operations
• Regional dependency — No alternative region for failover within Indonesia

Partner Solution

PT Metrodata Electronics Tbk, an AWS Advanced Tier Services Partner, designed and implemented a strategic migration of the customer's 16 servers/instances from their existing AWS Asia Pacific (Singapore) region to the AWS Asia Pacific (Jakarta) region (ap-southeast-3), while preserving source IP addresses and implementing high availability architecture for critical applications.

How the solution was delivered: Metrodata followed a structured five-phase methodology to ensure IP preservation, minimal downtime, and successful migration of all 16 workloads:

a. IP Preservation Strategy (Critical Requirement)

The customer's most critical requirement was maintaining the same IP addresses after migration from Singapore to Jakarta for all 16 servers. Metrodata designed and implemented a solution using:

• AWS Private NAT Gateway — Enabled IP address preservation during cross-region migration
• Elastic IP mapping — Maintained consistent public IP addressing where required
• VPC CIDR planning — Designed Jakarta region VPC with identical CIDR blocks to the Singapore environment, ensuring internal IP addresses remained unchanged across all 16 instances
• DNS and routing updates — Minimized application-level changes by preserving IP continuity

This approach eliminated the need for hundreds of configuration changes across internal systems, third-party integrations, and legacy applications dependent on these 16 servers.

b. Migration Execution Using AWS Application Migration Service (MGN)

Metrodata used AWS Application Migration Service (MGN) to execute the cross-region migration of all 16 servers:

• Real-time data replication from Singapore to Jakarta region
• Continuous block-level replication ensuring data consistency
• Automated conversion of source servers to run natively on Jakarta region infrastructure
• Minimal downtime cutover with testing and validation before final switchover
• 16 servers/instances successfully migrated across all business units (forestry, palm oil, paper, heavy equipment, property)

c. Hybrid High Availability Architecture

Metrodata implemented a tiered availability model based on application criticality:

For standard workloads (majority of the 16 servers):

• Deployed across multi-AZ subnets (as configured)
• Primary operation in AZ A (consistent with customer's existing operational model)
• Foundation for future active-active expansion

For critical applications (customer's highest-priority systems among the 16 servers):

• Active-active deployment across 2 separate workloads
• Application Load Balancer (ALB) distributing traffic across both workloads
• If one workload or AZ experiences issues, the ALB automatically routes traffic to the healthy workload
• Near-zero downtime for critical business functions

This hybrid approach balanced operational simplicity for standard workloads with maximum resilience for critical applications.

d. Architecture & Governance Modernization

Previously, the customer operated all 16 workloads within a single AWS account. Metrodata helped transform the customer into a multi-account AWS Landing Zone framework for improved governance, security isolation, and workload separation across business units.

e. Infrastructure Modernization

Metrodata upgraded several EC2 instances among the 16 servers from older generations to the latest generation during the migration, providing improved performance, larger network bandwidth, and better cost efficiency.

Primary AWS services used: AWS Application Migration Service (MGN), Amazon EC2 (latest generation), Amazon EBS, Amazon VPC, Application Load Balancer (ALB), AWS Private NAT Gateway, AWS Landing Zone (multi-account framework), AWS Organizations, AWS IAM, Amazon CloudWatch, and AWS Transit Gateway.

Results and Benefits

Following implementation, the solution is now in production and has delivered measurable business, operational, regulatory, and availability outcomes for the customer's 16 migrated servers.

Metric	Before (Singapore Region)	After (Jakarta Region)	Improvement
AWS Region	Singapore (ap-southeast-1)	Jakarta (ap-southeast-3)	Data sovereignty achieved
IP addresses	Original IP schema	Identical IPs preserved	Zero reconfiguration of dependent systems
Servers/instances migrated	0	16 servers	100% of identified workloads
Latency for Indonesian users	Higher (cross-border)	Reduced (in-country)	Improved user experience
Data sovereignty compliance	At risk	Fully compliant	Regulatory requirement met
Critical app availability	Single workload per app	Active-active (2 workloads + ALB)	High availability achieved
Standard workload AZ placement	Single AZ (AZ A)	Single AZ (AZ A) with multi-AZ subnet foundation	Maintained operational model with future flexibility
AWS account structure	Single account	Multi-account Landing Zone	Improved governance & isolation
EC2 instance generation	Older generation	Latest generation	Better performance & network bandwidth
Regional dependency	Single region (Singapore)	Jakarta region	Local presence for Indonesian operations

Specific business benefits achieved:

• 100% migration completion — All 16 servers/instances successfully migrated from Singapore to Jakarta region with zero data loss
• IP addresses preserved with zero reconfiguration — The IP preservation strategy for all 16 servers eliminated months of reconfiguration work across internal systems, third-party integrations, and legacy applications. Dependent systems continued operating without modification, significantly reducing migration risk and timeline
• Data sovereignty compliance achieved — By migrating all 16 workloads from Singapore to Jakarta region, the customer now meets Indonesian regulatory requirements for data residency, eliminating compliance exposure and potential penalties
• Improved latency and user experience — Indonesian end-users, business units, and partner systems now experience lower latency connecting to applications hosted within Indonesia, improving productivity and operational efficiency across forestry, palm oil, and paper production systems
• Critical applications now active-active with ALB — The customer's most critical applications (subset of the 16 servers) are deployed across 2 separate workloads with traffic distributed via Application Load Balancer. If one workload or Availability Zone experiences issues, the ALB automatically routes traffic to the healthy workload, providing near-zero downtime for critical business functions
• Standard workloads maintained with future flexibility — Workloads remain primarily in AZ A (consistent with the customer's existing operational model) but now sit on multi-AZ subnet infrastructure, providing a foundation for future active-active expansion without architectural rework
• Enhanced governance with multi-account Landing Zone — The transition from single AWS account to multiple AWS accounts enables clearer workload separation by business unit, improved access control, and centralized security management — essential for a conglomerate with diverse operations
• Modernized infrastructure with latest-generation instances — Upgrading several of the 16 servers to the latest generation of EC2 instances during migration provides improved compute performance, increased network bandwidth, access to modern security features, and better overall application responsiveness
• Minimal business disruption during migration — Using AWS Application Migration Service (MGN) with real-time replication, the cross-region migration of all 16 servers was completed with minimal downtime, ensuring production operations across all business units continued uninterrupted
• Eliminated regional concentration risk — All 16 workloads now operate from the Jakarta region, providing local presence for Indonesian operations and reducing dependency on Singapore-based infrastructure
• Scalable foundation for future growth — The Jakarta region architecture, multi-account Landing Zone, and hybrid availability model provide a scalable, secure, and resilient cloud foundation capable of supporting the conglomerate's continued expansion across 16 existing and future workloads

By leveraging AWS Application Migration Service and a comprehensive cross-region migration strategy with IP preservation, the customer successfully migrated 16 servers/instances from Singapore to Jakarta region, achieved data sovereignty compliance, preserved IP addresses to eliminate reconfiguration work, and implemented active-active high availability for critical applications — transforming their cloud infrastructure while maintaining operational continuity for one of Indonesia's largest multinational conglomerates.

About the Partner

PT Metrodata Electronics Tbk (IDX: MTDL) is one of Indonesia's leading digital solution providers, trusted by more than 200 companies across various industries in driving business transformation and modernizing IT infrastructure through AWS Cloud adoption. As an AWS Advanced Tier Services Partner, Metrodata helps organizations build technology foundations that are more agile, secure, and scalable. Metrodata currently holds the AWS Migration and Modernization Competency and AWS Glue Service Delivery designation, demonstrating validated technical expertise in cloud migration, data integration, and infrastructure modernization. In this project, Metrodata executed a complex cross-region migration of 16 servers from Singapore to Jakarta with IP preservation, implemented tiered high availability architecture (active-active for critical apps via ALB), and ensured zero disruption to business operations across multiple business units.

Case Study Date: January 2025 (Project completed and in production)
Deployment Region: Source: AWS Asia Pacific (Singapore) → Target: AWS Asia Pacific (Jakarta / ap-southeast-3)
Total Servers/Instances Migrated: 16
Customer Type: Leading Indonesian multinational conglomerate (forestry, palm oil, paper, heavy equipment, property) — anonymous per customer request
Previous State: AWS Singapore region, single account, 16 workloads in single AZ (AZ A), no active-active for critical apps
IP Preservation: Successfully maintained same IP addresses from source to target for all 16 servers