
Every Site.
One Login.
Say goodbye to juggling VPNs and login credentials. Overlay gives you centralised remote access to your BMS without a system overhaul.
Onboarding in hours. No site visits required.
Why BMS operators leave legacy tunnels
Every pain point,
directly solved.
No more choosing between security and convenience. Overlay closes each gap, one by one.
"Overlay blends convenience with enterprise-grade controls โ without the enterprise-grade complexity."
Unified Command Center
One login.
Every site. Every team.
No more tabbing between VPN clients or hunting for credentials in shared docs. Your entire estate, searchable and accessible from a single browser tab.
- See all sites at a glance โ filter by client, region, or status
- Jump into any session in two clicks
- Works with your existing VPN, mesh network, or direct connection
- Logs you into head-ends automatically (Niagara 4 now supported)

New Revenue Streams
Launch a customer portal
in minutes.
Give your clients secure, self-service access to their BMS dashboards. No development needed. Turn access into recurring revenue.
- White-label portal with your branding, hosted on your domain
- Granular permissions โ clients see only what you allow
- High-margin recurring revenue from digital services
- Ready-made sales collateral to close faster
- Automated customer billing and renewals
Revenue Calculator
See what your sites could earn
Number of sites
25
Reduce Engineer Friction
Reclaim 10โ30% of
your bureau's day.
Every minute spent logging into systems is a minute you're not solving problems.
- Convenient remote commissioning without losing security
- Works out-of-the-box with Workbench, IQSET, Desigo CC, EcoStruxure
- Just-in-Time access locked to engineer's IP, expires at session end
- Auditable contractor access without compromising security

Built for Multi-Vendor Environments
Zero-trust. Identity-driven.
Fully auditable.
Security that works by default, not by configuration. No shared credentials. No open ports. Every session logged and attributable.
Identity-based access
Users prove who they are, not what network they're on. Sessions map to individuals, never shared credentials.
Zero-trust segmentation
Every session isolated. Authenticated users only see their assigned scopes. No lateral movement possible.
Session sandboxing
Ephemeral session hosts isolate activity. Contractors get scoped access โ nothing more, nothing less.
Continuous logging
Every click, every change, timestamped and attributed. Satisfy enterprise compliance requirements by default.
Multi-vendor native
Overlay normalises Tridium, Siemens, Schneider, and legacy stacks without gateway swaps.
BMS workflow-driven
Built around common BMS workflows, with secure defaults. Designed to save time and prevent breaches.
"We onboarded 40 sites in a weekend. What used to take three engineers now takes one. Our clients don't even know it's Overlay โ they just know their portal works."
โ JAMES WALKER, Operations Director, Allied Facilities Group
Compatibility & Onboarding
Works with the connectivity
you already have.
No site changes. No new firewalls. No network redesign. Overlay adapts to your infrastructure โ not the other way around.
VPNs
OpenVPN, IPSec, or your existing tunnel. Provide a VPN profile and Overlay's connector joins your network instantly.
Mesh Networks
ZeroTier, WireGuard, Tailscale โ we bridge them all. Add Overlay like adding another site or device.
Remote Desktop
RDP, VNC, or browser-native sessions. Login details entered once. Authorised users connect with a single click.

Guided setup adapts to your network. Most sites connect in under an hour.
Four-Step Rollout
Go live in four steps.
No hardware changes. No site visits. Onboarding typically takes hours, not weeks.
Book a Demo
30-minute call. We'll suggest the quickest solution for your estate and answer your questions.
Connect Your Networks
Guided setup. Works with your existing VPN or mesh - or we provide a managed VPN service if you don't already use one.
Onboard your team
Invite engineers, staff and contractors. Create your sites. Set permissions. Start remediating remotely.
Unlock New Revenue
Launch your customer portal. Turn access into recurring revenue.
Pricing
Simple pricing that scales with you.
Start on project pricing. Move to enterprise when you're ready. No long-term contracts. No surprise fees.
Project Plan
Pay-as-you-go for resellers and small bureaus. Scale discounts available.
- โPay per site, cancel at any time
- โUp to 5 users per site
- โHTTP(S) + Fox(S) included
- โFull audit logging
- โFirst customer portal free
- โMonetisation support (auto-billing and renewals)
- โUpgrade to enterprise anytime
Enterprise Plan
Dedicated environment with predictable costs for growing teams. Everything in Project, plus:
- โUnlimited sites
- โUnlimited team members
- โUnlimited customer portals
- โAdd cloud-hosted VMs
- โDedicated support portal
- โSSO / SAML integration
- โSLA guarantee
Questions? Book a 30-minute call and we'll find the right fit.
Ready to move?
Your team deserves better
than VPN juggling.
Join the bureaus who've reclaimed 10+ hours per week.
Setup takes hours, not weeks. No hardware. No network changes.
30 minutes call, no commitment required.