Transition from On-Premise to Cloud Security: A Step-by-Step Guide with Acre
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Managing a physical security estate built on on-premises infrastructure has its limits. Adding a new site requires on-site engineering. Updating access permissions means someone at a local terminal. Reporting fragments across separate servers. And as your portfolio grows, the operational burden of maintaining aging on-premises systems grows with it.
The case for cloud migration is clear. But most security leaders are not in a position to start from scratch, and they should not have to. Replacing working on-premises infrastructure overnight introduces risk, cost, and operational disruption that no organisation can absorb easily.
Acre’s approach is different. Rather than forcing a clean break, Acre works with your existing on-premises environment and builds toward cloud at a pace that fits your operation. This guide walks through the process, from initial conversation to scaled cloud migration, and explains how Acre makes the transition practical.
If you're still in research mode, keep reading, we'll break down exactly what drives physical security costs and how to plan for them.
Note: If you're planning a new security installation and want to know what it should actually cost before committing to anything, book a call with our team. We'll walk through your project scope and give you a straight answer.
Why a Planned Migration Strategy Matters in Physical Security
Physical security systems are operationally critical in a way that general IT infrastructure is not. Access control, intrusion detection, and visitor management cannot go offline while data migrates. And for many organisations, government facilities, heritage buildings, regulated industries, certain on-premises systems need to stay in place permanently.
That is why a successful premises-to-cloud migration in physical security requires more than selecting a cloud provider. It requires a migration strategy that accounts for your specific environment: which systems can move to the cloud, which must remain on premises, and how both coexist during and after the transition.
Acre’s portfolio is built for this. The on-premises infrastructure your organisation depends on today, whether ACTpro for local, sovereign access control or existing intrusion hardware, stays operational throughout. Cloud capabilities layer on and expand over time, on your schedule. The result is a seamless transition rather than a disruptive replacement project.
Step 1: Start the Conversation
Before any cloud migration project begins, Acre’s team needs to understand your environment. The process starts with a brief intake form that captures your role, solution interest, access control, identity, intrusion, visitor management, or networking, and whether your organisation has worked with Acre before. From there, an Acre team member follows up to schedule a discovery call.
This is not a product demonstration. It is a structured conversation designed to surface the specifics of your current on-premises setup, your business objectives, and the constraints that will shape a viable migration plan. The discovery call is where Acre establishes what meeting you where you are actually means for your estate.
Ready to start? Fill in the form to connect with the Acre team.
Step 2: Environment Assessment and Gap Analysis
The discovery call feeds into a structured assessment of your current on-premises environment. Acre’s team works through a gap analysis to build a clear picture of what exists and what the cloud migration needs to account for. The assessment typically covers:
- Which on-premises systems are in place and how they are configured
- Which sites, doors, or subsystems have compliance requirements or data sovereignty restrictions that require on-premises infrastructure
- Where cloud management would deliver the most immediate operational benefit
- What integrations exist today, Time and Attendance, VMS, PSIM, HR systems, and which must be preserved in the new cloud environment
This gap analysis is the foundation of every successful premises-to-cloud migration. It determines whether a hybrid approach is appropriate, which on-premises infrastructure stays in place indefinitely, and where cloud resources can be introduced first with minimal disruption to business operations.
Acre supports cloud, on-premises, and hybrid designs, including air-gapped configurations for organisations with the strictest data sovereignty requirements. The assessment establishes which model applies to which part of your estate.
Step 3: Define Your Migration Strategy
Not every premises-to-cloud transition follows the same path. Based on the assessment, Acre proposes a migration strategy matched to your specific infrastructure, compliance requirements, and operational priorities. Three common patterns emerge depending on the current environment.
Hybrid: On-Premises and Cloud Running in Parallel
Acre supports hybrid designs where on-premises and cloud systems run concurrently across the same estate. A common configuration: ACTpro manages air-gapped or high-security sites on premises while ACT365 handles remote or distributed locations in the cloud environment. This is the most common starting point for enterprise organisations with legacy systems or regulated on-premises data centers.
A hybrid approach is not a temporary workaround. For many organisations, it is the permanent end state, cloud agility where it adds value, on-premises control where it is required.
Phased Cloud Migration Across Existing Sites
For organisations ready to move toward full cloud, migration happens in planned stages. High-priority sites move first. Each phase is templated so subsequent rollouts replicate quickly. Data validation at each stage confirms that access records, credentials, and user permissions have migrated correctly before any on-premises system is decommissioned.
Cloud-First for New Sites and Expansions
New sites and expansions are provisioned directly into the cloud platform from the outset, pre-configured off-site, deployed remotely, with no on-site server infrastructure required. This approach keeps the migration project clean: legacy on-premises systems are migrated separately on their own timeline, with no dependency on new expansion activity.
Modernizing Without Starting Over: How Acre Bridge Fits In
For most organizations, the barrier to modern access control isn't awareness, it's disruption. Existing on-premises systems are often deeply embedded in day-to-day operations, and the prospect of a full rip-and-replace creates real hesitation around cost, downtime, and risk.
Acre Bridge was built specifically for this situation. It's a hardware device that connects existing on-premises access control environments to Acre Access Control, the company's cloud-native platform, allowing organizations to begin migrating to a more connected, centralized model without abandoning what's already working.
Rather than forcing an all-or-nothing decision, Acre Bridge supports a phased approach. On-premises and cloud environments run in parallel during the transition, giving security teams time to move at a pace that fits their operational reality. The result is a more flexible path to modernization, one that respects existing infrastructure investments and reduces the pressure of large-scale change.
For organizations that want the benefits of cloud-enabled access control but aren't ready for a full system overhaul, it's a practical first step.
Step 4: Run a Proof-of-Concept Pilot
Before committing to a broader cloud migration, Acre teams run a proof-of-concept pilot. This typically starts with a single door or a single site, a controlled environment where the migration can be validated before it scales. Pilots commonly run as four-week evaluations, with defined scope and success criteria agreed in advance.
The pilot is where several critical checks happen simultaneously:
- Cloud-managed access performance is validated against your on-premises baseline
- Remote configuration and administration workflows are tested end-to-end
- Integrations with existing on-premises systems and enterprise data sources are verified
- Data validation confirms that access records and credential data migrate cleanly
- Administrator and cardholder experience is assessed against operational requirements
The pilot keeps migration risk contained. Nothing scales until the pilot proves the approach works in your specific environment, particularly important for mission-critical on-premises sites.
Step 5: Configure and Deploy
Once the pilot is validated, deployment of the broader cloud environment begins. A key advantage of Acre’s cloud access control, whether through ACT365 or Acre Access Control, is remote pre-configuration. Controllers and hardware are configured off-site before they arrive on location, significantly reducing on-site engineering time and minimising disruptions to business operations.
The Smart Controller, Acre’s hardware for cloud access control, connects natively to Acre’s cloud platform and supports remote management and automatic updates post-installation. It is designed to bring enterprise-grade cloud access control to SMBs and distributed estates without the overhead of traditional on-premises server infrastructure.
For organisations adding cloud visitor management alongside access control, Acre’s Enterprise Visitor Management platform can be deployed in parallel. It provides reception teams with a cloud-based platform for pre-registration, host notifications, QR-based entry, and configurable data retention, without requiring changes to existing access control infrastructure.
Step 6: Scale Across the Estate
The configuration from the pilot and initial deployment becomes the repeatable template for scaling. Each additional site follows the same pattern, reducing the time and cost of extending the cloud migration project across a larger on-premises estate.
Acre’s cloud access control scales without architectural constraints. ACT365 supports large-scale deployments across distributed sites, growing as your estate grows. As additional sites come online or existing on-premises locations transition to cloud management, they are added to the same centralized cloud environment, giving security operations a single management layer across the full portfolio, regardless of size.
Remote adds, changes, and user management eliminate on-site visits for routine administration. Access permissions, fire muster workflows, and credential management are handled centrally across the cloud platform. Templates from earlier phases accelerate each subsequent rollout.
Note: If you're comparing security systems and want to see the real numbers, not just the sticker price, use our TCO Calculator to map out your total cost of ownership across hardware, installation, and ongoing maintenance.
Step 7: Ongoing Cloud Management
A completed cloud migration is not a static end state. Acre’s cloud platforms are designed for continuous operational management, not just initial deployment. Ongoing capabilities across the cloud environment include:
- Real-time alerts and analytics dashboards across all managed sites
- Open API connections for Time and Attendance, HR systems, and identity providers
- Centralised reporting to support compliance requirements and access audit trails
- Remote firmware updates and system health monitoring
- Multi-site access policy management from a single cloud platform
Acre’s information security management is backed by ISO 27001 certification. Visitor data controls are designed for GDPR alignment, with configurable retention settings and customer control over what is stored, for how long, and who can authorise purges. For organisations operating across multiple jurisdictions, these controls can be configured to meet regional compliance requirements.
For on-premises infrastructure that remains in place as part of a hybrid design, existing systems continue to operate without modification. The cloud migration adds capability without removing control from the parts of your estate that require on-premises management.
What Happens to Your Existing On-Premises Infrastructure?
The most common concern in any cloud migration project is the fate of existing on-premises systems. With Acre, the answer depends on your requirements, not a fixed migration path.
ACTpro, Acre’s on-premises access control system, is built for organisations that need local, sovereign, or air-gapped control, government facilities, heritage buildings, and regulated sites where enterprise data cannot leave a controlled on-premises data center. It is not retired as part of a cloud migration. It coexists with cloud components in a hybrid model, supporting the on-premises infrastructure that must stay while cloud expands where it can.
Acre’s open APIs mean on-premises systems can exchange data with cloud platforms without a rip-and-replace migration. Time and Attendance integrations, PSIM connections, and identity provider links function across both on-premises and cloud environments. What works in your current environment does not need to be rebuilt to support the migration.
Acre’s position: integrate what works, retire what doesn’t, and migrate to cloud at the pace your operation and compliance requirements allow.
Start Your Cloud Migration with Acre
The transition from on-premise to cloud does not require dismantling what works. It requires the right migration strategy, a team that understands your on-premises environment, and a platform built to meet you where you are.
Acre’s team will assess your current on-premises infrastructure, identify where cloud migration delivers the most value first, and build a phased plan around your specific business objectives, compliance requirements, and operational constraints.
