IaaS, PaaS, SaaS & VPNaaS cloud deployments

Put the cloud to work.

Public cloud for scale, private cloud for control, hybrid for both. Changing Technologies designs, migrates, secures and manages cloud infrastructure, platforms, applications and VPN as a Service, sized to your workloads, budget and security requirements.

SoftwareMicrosoft 365, UC, file sharing
SaaS
PlatformDatabases, app hosting, Kubernetes
PaaS
InfrastructureVMs, storage, networking
IaaS
Secure accessZero-trust remote access
VPNaaS

See it in under two minutes

How CTI puts the cloud to work.

The four service models, public versus private cloud, and how we move workloads without disrupting your business. Click a chapter to jump to it.

  • 0:13Infrastructure as a Service
  • 0:29Platform as a Service
  • 0:43Software as a Service
  • 0:58VPN as a Service
  • 1:11Public, private & hybrid
  • 1:24How we deliver

Cloud services

Four ways to consume the cloud. One partner to deploy them.

Most organizations use a mix. We help you decide what belongs where, then build it with security, identity, backup and monitoring in place from day one.

IaaS

Infrastructure as a Service

On-demand virtual machines, storage and networking, without buying hardware.

  • Windows & Linux VMs sized to the workload
  • Azure or private cloud hosting
  • Virtual networks, firewalls & private links
  • File shares and backup targets
PaaS

Platform as a Service

Build and run applications while the provider manages servers, patching and runtime.

  • Managed SQL & PostgreSQL databases
  • Web & API app hosting
  • Containers & managed Kubernetes
  • Identity, access & cost guardrails
SaaS

Software as a Service

Business applications delivered in the browser, licensed per user and always current.

  • Microsoft 365 deployment & migration
  • Unified communications & VoIP
  • Secure large-file sharing
  • Single sign-on & SaaS backup
VPNaaS

VPN as a Service

Replace aging VPN appliances with cloud-delivered, zero-trust remote access.

  • Access by identity & device, not location
  • Per-application policies
  • Secure access for remote & overseas staff
  • No concentrator hardware to maintain

Who manages what

The service model decides where your responsibility ends and the provider's begins. Security of your data and identities always stays with you, and CTI helps you carry it.

LayerOn-premisesIaaSPaaSSaaS
Data, users & accessYouYouYouYou
ApplicationsYouYouYouProvider
Runtime & middlewareYouYouProviderProvider
Operating systemYouYouProviderProvider
Servers, storage & networkYouProviderProviderProvider
Datacenter & powerYouProviderProviderProvider

Public & private cloud

Scale, control, or both.

We place each workload where it runs best, based on performance, compliance, cost and how fast it needs to grow.

Public cloud

Scale

  • Elastic capacity, pay as you go
  • Global regions and built-in redundancy
  • Managed platform and AI services
  • Best for variable or fast-growing workloads

Private cloud

Control

  • Dedicated virtual machines and resources
  • High-availability clusters with enterprise SAN storage
  • Predictable monthly cost
  • Best for steady, sensitive or legacy workloads

Hybrid cloud

Both

  • Workloads split across public, private and on-premises
  • One identity, one network policy
  • Cloud backup and disaster recovery for on-site systems
  • Best for phased modernization
Public cloud platform

Microsoft Azure

We deploy and manage Azure virtual machines, storage and file shares, virtual networks, managed databases, app hosting and Kubernetes, with Microsoft Entra ID for identity and single sign-on. Start pay-as-you-go and scale as demand grows.

Private cloud & VM hosting

Dedicated virtual machine hosting

Run your virtual machines on high-availability clusters with enterprise SAN storage, full console access and scheduled backups, in geographically diverse data centers. Bring an existing VM, or let us convert physical servers for you.

Physical server→P2V conversion→Virtual machine→Cloud

How we deliver

Assess. Design. Migrate. Manage.

Every deployment includes backup, monitoring and a recovery plan we actually test.

Assess

Inventory servers, apps, data and users. Map dependencies, costs and compliance needs.

Design

Choose IaaS, PaaS, SaaS or VPNaaS per workload, and design identity, network and security.

Migrate

P2V conversions, VM and data moves, and Microsoft 365 migrations, scheduled around your business.

Manage

Monitoring, patching, cost reviews, backup checks and help desk support after go-live.

Cloud fit finder

What should you move to the cloud?

Three quick taps. You'll see a recommended starting point, then send it to CTI and we'll confirm the details with you.

1What do you want to move or modernize?
2What matters most?
3When?
Recommended starting point

Hybrid cloud

    Send this to CTI → Or call (202) 688-3631, Ext. 100

    Questions

    Cloud deployment FAQ

    What's the difference between IaaS, PaaS and SaaS?

    IaaS rents you the infrastructure (virtual machines, storage, networking) and you manage the operating system up. PaaS adds a managed platform so you only deploy your application and data. SaaS is a finished application, such as Microsoft 365, that you simply sign in to and use.

    What is VPN as a Service?

    A cloud-delivered replacement for the traditional VPN appliance. Users connect through the provider's network, and access to each application is granted by identity, device health and policy (zero trust) instead of by being "inside" the office network.

    Should we choose public or private cloud?

    It depends on the workload. Variable or fast-growing workloads usually fit public cloud such as Microsoft Azure. Steady, sensitive or legacy workloads often run better and cost less on dedicated private cloud hosting. Many organizations use both, in a hybrid design.

    Can you move our existing physical servers?

    Yes. We convert physical Windows and Linux servers to virtual machines (P2V), test them, and then run them on private cloud hosting, in Azure or back on your own hardware.

    Do you still back up cloud workloads?

    Always. Cloud providers keep their platforms running, but protecting your data is your responsibility. Every CTI deployment includes backup, monitoring and a tested recovery plan.

    Trusted technology partner across the District of Columbia since 1997 — security, data protection, cloud and communications, delivered by local engineers.

    Talk to an engineer

    Get a quote
    © 2026 Changing Technologies, Inc. All rights reserved.Privacy policyContact

    Microsoft, Azure, Microsoft 365 and Microsoft Entra are trademarks of the Microsoft group of companies. All other trademarks belong to their respective owners.