A deep-dive into building an On-Premise
Strategy with AWS.
Scope:
- Architectures,
- Networking, hybrid services,
- Migration
patterns,
- Security,
- Governance,
- Tooling,
- Real-world blueprints.
Breakdown:
- Benefits of Hybrid,
- Hybrid Architecture Models,
- Connectivity Options,
- Hybrid Compute,
- Hybrid Storage + Data Strategy,
- Identity + Access Integration,
- Operations, Observability & Automation,
- Security & Governance,
- Migration Patterns (Rehost → Refactor),
- Common Use-Case Blueprints,
- Reference Architectures.
Intro:
- Modern enterprises rarely choose only cloud or only on-premise.
- Instead, Modern enterprises design hybrid architectures that unify both (the cloud and on-premise.)
- AWS offers a full hybrid ecosystem for extending, integrating, modernizing, and sometimes completely transforming on-premise workloads.
1. Benefits of Hybrid
Organizations go hybrid with AWS because:
Regulatory or data residency requirements
- Certain workloads must remain on-prem.
Legacy systems not cloud-ready
- Mainframes, monolithic ERP systems, specialized hardware.
Latency & edge computing
- Processing needs to occur close to manufacturing lines, hospitals, or retail sites.
Gradual migrations
- Hybrid enables “move when ready” rather than a big bang.
Modernization without disruption
- New cloud-native features can be layered on top of existing systems.
2. Hybrid Architecture Models
Model A: On-prem Primary + AWS for Bursting
- twtech runs core workloads on-prem, burst compute into AWS for peak loads.
Model B: AWS Primary +
On-prem Legacy Extensions
- Main applications run in AWS; on-prem supports legacy DBs, directory services, or proprietary systems.
Model C: Distributed Edge
+ Regional Cloud
- Use AWS Outposts, Snowball Edge, or Local Zones to keep compute close to users.
Model D: Multi-site
Active/Active
- Both on-prem and AWS regions are active, using global load balancing + data replication.
3. Connectivity Options (Network Deep Dive)
Connectivity is the backbone of hybrid infrastructure.
A. Layer 3 VPN
- Quickest
and cheapest.
- IPSec
tunnels over the internet.
- Good for
dev/test or light workloads.
B. AWS Direct Connect (DX)
- Dedicated
private fiber link.
- 1, 10,
100 Gbps options.
- SLA-backed,
low latency, highly stable.
- Supports
public, private, and transit VIFs.
C. DX + VPN (HA Hybrid)
- VPN acts
as failover for Direct Connect.
D. AWS Transit Gateway Hybrid Mesh
- Centralizes
routing.
- Integrates
multiple VPCs and on-prem networks.
E. SD-WAN + AWS Cloud WAN
- Allows
global WAN orchestration between branches and AWS.
4. Hybrid Compute Strategy
Option A: AWS Outposts
- AWS-managed hardware in twtech datacenter.
- twtech runs EC2, ECS, EKS, RDS locally, managed from AWS console.
Option B: AWS Snow Family
Edge compute + storage for disconnected environments.
Use cases:
- Tactical
edge
- Industrial
sites
- Large-scale
data migrations
Option C: VMware Cloud on
AWS (VMC)
Extend vSphere into AWS with native integration:
- vMotion
from on-prem
- Shared
operational model
- Tight
integration with native AWS services
Option D: Containers
Hybrid Kubernetes:
- EKS
Anywhere (EKS-A)
- EKS
Hybrid Nodes
- ECS
Anywhere
Option E: Serverless
Access to On-Prem
AWS Lambda calling on-prem services via:
- Direct
Connect
- API
Gateway + VPC Link
5. Hybrid Storage + Data Strategy
A. Direct Data Extension
- Amazon FSx for NetApp ONTAP integrates with on-prem NetApp clusters.
- FSx File Gateway for Windows file shares.
B. Storage Gateway (File, Tape, Volume)
Allows on-prem applications to use cloud-based storage
seamlessly:
- Backup to
AWS
- Archival
to Amazon S3 Glacier
- NFS/SMB
caching with cloud backing
C. Database Hybrid Approaches
- RDS + on-prem DBs using DMS for replication.
- Aurora Global Database with near-zero RPO failover to AWS.
- Babelfish for SQL Server migrations.
D. Data Lakes + Analytics
twtech can keep
operational DBs on-prem while analytic pipelines run in AWS:
- S3 as
central lake
- AWS Glue
for ETL
- Amazon
Athena for query
6. Identity & Access Integration
A. Active Directory Integration
- AWS
Managed Microsoft AD + Trust relationships
- AD
Connector (proxy)
B. Single Sign-On
- IAM
Identity Center (formerly AWS SSO)
- Federation
via SAML/ADFS/Okta
C. Secrets & Key Management
- AWS KMS
with on-prem HSM integration via CloudHSM
7. Operations, Observability & Automation
Unified Monitoring
- CloudWatch
metric aggregation from on-prem
- CloudWatch
Agent or Prometheus exporters
- AWS
Systems Manager (SSM) for hybrid fleet management
Unified Logging
- CloudWatch
Logs
- Amazon
OpenSearch Service
- On-prem
SIEM integration (Splunk, QRadar)
Automation
- Systems
Manager Run Command
- Patch
Manager for hybrid nodes
- IaC:
Terraform, CloudFormation, CDK
8. Security & Governance
Zero Trust Hybrid Models
- PrivateLink
to expose services securely
- Firewall
Manager + Security Hub
- Inspector
for EC2 + EKS +
on-prem agents
Encryption Strategy
- KMS
multi-region keys
- On-prem
HSM integration
Network Security
- VPC
endpoints, NACLs, security groups
- Microsegmentation
via AWS Network Firewall
9. Migration Patterns
1. Rehost (“Lift & Shift”)
- VMware Cloud on AWS
- AWS Application Migration Service (MGN)
2. Replatform
Move databases to:
- RDS
- Aurora
- DynamoDB
3. Repurchase
- Move to SaaS alternatives.
4. Refactor / Modernize
Break monolith into:
- Lambda
- Fargate
- Microservices
5. Retire / Retain
- Hybrid allows selective migration.
10. Common Use-Case Blueprints
A. Hybrid App Development
Apps use:
- API
Gateway in AWS
- On-prem
DB through Direct Connect
B. Disaster Recovery to AWS
Warm standby:
- Continuous
replication using DMS/MGN
- Route 53
failover
C. Cloud Bursting for Compute
On-prem HPC clusters overflow to:
- EC2 Spot
Fleets
- EKS
clusters
D. Edge Manufacturing
Outposts or Snowball for:
- Local
SCADA/PLC processing
- Batch
upload to AWS analytics tools
11. twtech Sample Reference Architectures
A. Hybrid Network Core
B. Hybrid Kubernetes
C. Hybrid Active Directory
On-Prem AD ←→ AWS Managed AD (trust)IAM Identity Center (SSO)D. Hybrid Storage Gateway
Local NFS/SMB Apps → File Gateway → S3 / Glacier
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