SSO or Separate Logins?
Separate logins cost more than they appear to: password support, orphaned accounts left behind after offboarding, and poor overview. SSO lets users log in once for all systems and provides central deactivation and MFA in one place. The investment usually pays off with many systems and users, but some vendors charge extra for SSO.
Single sign-on sounds like a convenience: not having to log in over and over. But behind the convenience is a real business case, and it’s as much about security and cost as about user experience. The question is whether SSO is worth the investment, and the answer hinges on what separate logins actually cost – a bill that rarely shows up anywhere but grows with every new system.
What SSO actually is
With separate logins, every system has its own password. The user logs in again in every tool, and the organization manages accounts system by system.
SSO, single sign-on, brings this together. The user logs in once against a central login, and every connected system trusts it. One password instead of ten, one point to control access from instead of scattered handling. For the user it becomes smoother, but the bigger payoff lies in what it does for security and administration.
The hidden cost of separate logins
Separate logins look free – every system has its own login anyway. But the cost is there, spread across three places:
- Password support. Forgotten passwords are one of the most common support tickets there is. Every reset takes time, and with many systems the tickets multiply. It’s a constant, quiet cost in both IT time and interrupted productivity.
- The offboarding risk. When someone leaves, the account has to be closed in each system individually. Miss one – and with ten systems, something is often missed – and a door stays open after the person has left. It’s a security gap that arises precisely because the handling is scattered.
- Shadow accounts. Over time, accounts pile up that no one has an overview of anymore: old, unused, forgotten. Each one is a potential entry point, and without central oversight they’re hard to even find.
None of these items shows up on a single invoice, but together they’re real – and they grow with the number of systems and users.
What SSO costs – including the SSO tax
SSO isn’t free either, and the math should be honest. The cost has two parts.
The first is the implementation: setting up the central login and connecting the systems to it. It’s a project, but a contained one.
The second is trickier and has earned its own name: the SSO tax. Many vendors only offer SSO in their pricier license tiers, even though it’s a pure security feature. To connect a system to your SSO, you can therefore be forced to upgrade the entire subscription. It’s a real line item that can change the math considerably, and it has to be factored in before you judge whether SSO pays off. Check early which of your systems hide SSO behind a pricier tier.
The security win: central control
This is where the strongest argument for SSO lies, and it carries real weight.
With SSO, you deactivate a person in a single place. When someone leaves, access to every connected system is pulled at the same time – no orphaned accounts, no door left accidentally open. Offboarding goes from a ten-step checklist where one step can be missed, to a single action.
You can also require strong authentication, MFA, centrally instead of fighting to turn it on in each system individually. An extra security step at login then automatically applies to everything behind the SSO. Taken together, access becomes something you oversee and control from one place, instead of something scattered across dozens of services where no one has the full picture. It’s a security win that’s hard to achieve any other way.
A concrete scenario
Say you’re forty people using fifteen cloud services. With separate logins, IT handles recurring password tickets every week, and every time someone leaves, fifteen accounts have to be closed by hand. Sooner or later one gets missed, and a former employee retains access to a system for months without anyone noticing.
With SSO, everyone logs in once, MFA applies everywhere, and when someone leaves, a single deactivation is enough. Add up the saved support time, the reduced risk, and the simpler everyday flow, and weigh that against the implementation plus any SSO tax on the services that charge extra. At fifteen systems and forty users, the math clearly tips toward SSO. If you were five people with three tools, the answer would be different. The decision lies in scale and sensitivity.
At Weapp we help you work out whether SSO pays off for your specific system landscape and connect what needs connecting. Check out our services or get in touch and we’ll take a look at your systems and users.
Frequently asked questions
What is single sign-on, in brief?
SSO means the user logs in once and then reaches every connected system without logging in again in each one. Instead of one password per service, there's a central login that the others trust. That simplifies everyday life for the user and gathers access control in one place for the organization.
What hidden costs do separate logins carry?
Mainly three. Support tickets for forgotten passwords take time every week. When someone leaves, accounts have to be closed in every single system, and if one is missed it becomes a security gap. On top of that, shadow accounts pile up that no one tracks anymore. The cost is spread out and rarely shows up in a single line item, but it's there.
What is the SSO tax?
A nickname for the fact that some vendors only offer SSO in their pricier license tiers, even though it's a security feature. That can force you to upgrade the entire subscription just to connect the system to your SSO. It's a real cost to factor in when you assess whether SSO pays off, on top of the implementation itself.
What's the biggest security win with SSO?
Central control. When someone leaves, you turn off access in one place, and the person loses it across all connected systems at the same time – no orphaned accounts left behind. You can also require strong authentication, MFA, centrally instead of system by system. Access becomes something you oversee and control from one place instead of chasing it across dozens of services.
When are separate logins still okay?
When the systems and users are few. If you have a handful of tools and a small team, the payoff from SSO is small relative to the effort of setting it up. The more systems and users, and the higher the security requirements, the more clearly the math tips toward SSO. The decision lies in scale and sensitivity, not in the technology itself.