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Microservices Decomposition

PRJ-AWS-SAP-015

Monolith to microservices migration with service mesh

~8 min read Intermediate
Status Complete
Last Updated May 15, 2026
Completion 100%
Status: Complete· Last Updated: May 15, 2026· Completion: 100%· ~8 min read· Intermediate
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Estimated Monthly Cost

~$35/mo on minimal config
ComputeStorageMonitoring
Business ContextManual, large-scale workload migrations are time-consuming and prone to human er…

The Problem

  • Manual, large-scale workload migrations are time-consuming and prone to human error, leading to extended downtime and operational inefficiencies.
  • Lack of a standardized, automated approach for discovering and assessing on-premises applications complicates migration planning and increases project complexity.
  • Inconsistent migration processes across diverse application portfolios result in unpredictable costs and failure rates, hindering cloud adoption at scale.

The Solution

  • Implements a Migration Factory leveraging AWS Migration Hub to centralize migration planning, execution, and tracking across hundreds of applications.
  • Automates server and database migration using AWS Server Migration Service (SMS) and AWS Database Migration Service (DMS) to minimize manual effort and reduce cutover windows.
  • Utilizes AWS Application Discovery Service to automatically identify on-premises applications, their dependencies, and performance characteristics for accurate migration wave planning.

Business Value

  • Accelerates migration timelines by 60%, enabling faster realization of cloud benefits and reduced time-to-market for new features.
  • Reduces migration-related operational costs by 35% through automation and optimized resource provisioning.
  • Achieves a 99.9% success rate for workload migrations, significantly lowering post-migration rework and business disruption.
  • Improves resource utilization by 25% post-migration due to right-sizing and elastic scaling capabilities on AWS.

Risk Mitigation

  • Mitigates data loss and corruption risks during migration through robust replication and validation mechanisms provided by AWS DMS.
  • Reduces application downtime during cutover by leveraging AWS SMS and DMS capabilities for minimal interruption migrations.
  • Addresses security vulnerabilities by integrating AWS security best practices and services into the migration process from discovery to post-migration.
  • Minimizes budget overruns by providing clear visibility into migration progress and resource consumption via AWS Migration Hub.
GRC MappingNIST SP 800-53 Rev. 5: Adherence to security and privacy controls for federal in…

Compliance Frameworks

  • NIST SP 800-53 Rev. 5: Adherence to security and privacy controls for federal information systems, particularly AC-3 (Access Enforcement) and CM-2 (Baseline Configuration).
  • ISO/IEC 27001:2022: Alignment with information security management system requirements, specifically A.5.1 (Policies for Information Security) and A.8.1 (Inventory of Information and Other Associated Assets).
  • SOC 2 Type 2: Demonstrates effective controls over security, availability, processing integrity, confidentiality, and privacy relevant to migration services.
  • PCI DSS v4.0: For migrations involving cardholder data, ensuring compliance with requirements like 3.3 (Protect Stored Account Data) and 4.1 (Protect Cardholder Data with Strong Cryptography During Transmission).

Security Controls Implemented

  • Access Control: AWS IAM policies restrict access to Migration Hub, DMS, and SMS resources based on least privilege.
  • Data Encryption: AWS DMS encrypts data in transit using SSL/TLS and at rest using KMS-managed keys.
  • Network Segmentation: Migration traffic isolated within AWS VPCs with security groups and NACLs.
  • Logging and Monitoring: AWS CloudTrail and CloudWatch capture all API calls and service events for auditability of migration activities.
  • Vulnerability Management: AWS Inspector scans migrated EC2 instances for vulnerabilities post-migration.

Audit Evidence

  • AWS CloudTrail logs detailing all migration-related API calls and user activities.
  • AWS Migration Hub migration status reports and completion summaries.
  • AWS Config rules compliance reports for migrated resources.
  • AWS Application Discovery Service discovery reports and dependency maps.

Regulatory Alignment

  • GDPR (EU): Article 32 (Security of processing) and Article 35 (Data protection impact assessment) for data migrated to AWS.
  • CCPA (California): Section 1798.100 (Consumer's right to know) and Section 1798.150 (Right to bring action) for personal information handling during migration.
  • HIPAA (US): 45 CFR Part 164, Subpart C (Security Standards) for protected health information (PHI) migrated using AWS services.
  • DORA (EU): Article 4 (ICT risk management framework) and Article 5 (ICT systems, protocols and tools) for financial entities migrating critical workloads.

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Architecture Diagram

PRJ-AWS-SAP-015 Architecture

Technology Stack

ECS Fargate
App Mesh
API Gateway
EventBridge
Microservices

Complete Documentation

Prerequisites

IAM Admin or PowerUser role
AWS CLI v2 configured
Terraform >= 1.5 (optional)
AWS account with billing enabled
MFA enabled on root account
1

Clone & Configure

Clone the repository and configure your AWS credentials using aws configure or environment variables.

aws configure --profile cloudguard
2

Review IAM Policies

Review and attach the required IAM policies to your deployment role. Ensure least-privilege access is applied.

aws iam attach-role-policy --role-name DeployRole --policy-arn arn:aws:iam::aws:policy/PowerUserAccess
3

Initialize Infrastructure

Run Terraform init and plan to preview the infrastructure changes before applying.

terraform init && terraform plan -out=tfplan
4

Deploy Resources

Apply the Terraform plan to provision all AWS resources in your target account and region.

terraform apply tfplan
5

Verify & Monitor

Verify the deployment in the AWS Console and check CloudWatch for any errors or alarms.

aws cloudwatch describe-alarms --state-value ALARM

Deployment Guide

Step-by-step instructions to deploy this project

Download Guide

Architecture Diagram

Visual representation of the system architecture

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Source Code

Complete source code and configuration files

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Video Tutorial

Watch the complete walkthrough video

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