Single sign-on, or SSO, means you log in once and get into all your work tools. Instead of a separate password for the email tool, the design app, the accounting software and the store dashboard, each person has one company account. They sign in to it, and every connected tool trusts that sign-in.

SSO concerns teams more than solo sellers. A creator working alone rarely needs it. A brand with 10 employees, a couple of freelancers and 25 software subscriptions starts to feel the pain it solves: forgotten passwords, shared logins, and the uneasy question of who still has access after someone leaves. Understanding SSO helps you decide when it is worth paying for and what to ask software vendors.

What is single sign-on?

Single sign-on is an authentication arrangement in which a central service, called the identity provider (IdP), verifies who a user is, and other applications, called service providers (SP), accept that verification instead of checking a password themselves. Common identity providers are Google Workspace, Microsoft Entra ID (formerly Azure AD), Okta and similar services.

Two open standards carry most SSO traffic:

  • SAML 2.0: an older, XML-based standard, very common in business software. The identity provider sends the application a signed "assertion" saying who the user is.
  • OpenID Connect (OIDC): a newer standard built on top of OAuth 2.0, using JSON tokens. It powers many "Sign in with Google" or "Sign in with Microsoft" buttons in work tools.

What SSO is not:

  • It is not a password manager. A password manager stores many passwords. SSO removes most of them.
  • It is not the same as "Sign in with Google" on a consumer website, although the technology overlaps. Business SSO is controlled by the company, which decides who gets in.
  • It is not a security guarantee on its own. If the single account is weak, every tool behind it is exposed. That is why SSO almost always goes with multi-factor authentication.

Related terms include SCIM, a standard that creates and removes user accounts in each tool automatically when someone joins or leaves, and "SSO tax", the habit of software vendors to reserve SSO for their most expensive plans.

Why it matters

SSO matters because access is a business asset and a business risk. Every tool your team uses holds some part of the company: customer lists, supplier prices, revenue, ad budgets. Each separate login is a door that must be opened, watched and closed.

Consider a brand with 12 people, including 3 freelancers, using 20 SaaS tools. Without SSO, that is up to 240 separate accounts. When a freelancer leaves, someone must remember which 9 tools they had and remove them one by one. Miss one, and a former contractor still has access to the email list of 40,000 subscribers. Password resets also cost time: if each person loses 10 minutes a week to forgotten passwords and locked accounts, that is about 100 hours a year for the team, or roughly $3,000 at $30 an hour.

With SSO, offboarding becomes one action: disable the account in the identity provider, and every connected tool closes at once. Onboarding speeds up the same way. The trade-off is cost. Identity providers charge per user, often $3 to $15 a month, and many tools only offer SSO on business or enterprise plans that can cost two to five times more than the standard plan. For a team of 4, that rarely pays off. For a team of 20 handling customer data, it often does.

How it works

A typical SAML or OIDC login happens in a few seconds, like this:

  • You open a tool. You go to the dashboard of an app your company uses and click "Sign in with SSO", or enter your work email.
  • The tool redirects you. It recognises your company domain and sends your browser to the identity provider.
  • You sign in once. If you are not already signed in, you enter your company credentials and approve an MFA prompt. If you already signed in this morning, this step is skipped.
  • The identity provider vouches for you. It sends back a signed assertion or token saying who you are, sometimes with your role or group.
  • The tool checks the signature. It verifies the message really comes from your company's identity provider, using a certificate or key set up in advance.
  • You are in. The tool opens your session, often creating your account the first time if the company allows it.
  • Access ends centrally. When an admin disables your account in the identity provider, you can no longer sign in anywhere. With SCIM, your accounts in each tool are also removed.

Setting this up requires an admin to exchange configuration between each tool and the identity provider: a URL, a certificate and a few settings. For common apps, identity providers offer ready-made templates.

Benchmarks and examples

Useful reference points:

  • Team size. SSO usually becomes worth discussing around 10 to 25 people, or earlier if you handle sensitive data or work with many contractors.
  • Tool count. Small companies commonly use 15 to 40 SaaS tools. The more tools, the more SSO saves.
  • Cost. Identity providers range from free tiers to about $15 per user per month. Adding SSO to a single tool can mean moving from a $20 plan to a $60 plan per seat.
  • Offboarding time. Manual removal across many tools takes 30 minutes to several hours per person. With SSO and SCIM, it takes minutes.

Typical situations:

  • A brand on Google Workspace uses its Google accounts to sign in to its design, project and support tools, and removes access for a departing employee in one click.
  • An agency managing 15 client accounts uses SSO for its own internal tools, while clients add the agency's people as members in their own tools.
  • A founder building a B2B product is asked by a first large customer whether the product supports SAML SSO, and adds it before signing the contract.

Common mistakes

  • Turning on SSO without MFA. One password now opens everything. Protect the central account with a strong second factor.
  • Keeping local passwords as a back door. If people can still log in with an old password, leavers keep access. Disable local logins where possible, except one emergency admin.
  • Forgetting tools outside SSO. Some apps do not support it. Keep a list of them and handle their accounts manually at every departure.
  • Buying enterprise plans too early. A team of 5 pays a lot for SSO it could replace with a password manager and good habits.
  • Using a personal account as the admin. If the founder's personal email controls the identity provider, the whole company depends on that single account.

Best practices

  • List your tools first. Write down every app, who uses it and whether it supports SAML or OIDC. This tells you what SSO would really cover.
  • Start with the identity you already have. If your team already uses Google Workspace or Microsoft 365, begin there before buying a separate provider.
  • Require MFA on the identity provider. Prefer an authenticator app or a security key over SMS.
  • Use groups and roles. Give access by team, such as "support" or "marketing", rather than person by person.
  • Automate joiners and leavers. Where tools support SCIM, turn it on so accounts appear and disappear automatically.
  • Keep an emergency admin. One protected account that does not depend on SSO lets you recover if the identity provider fails.
  • Ask vendors early. When you choose software, ask whether SSO is available and on which plan, so the "SSO tax" does not surprise you later.

In Roctify

Roctify does not offer single sign-on today. You and your team sign in to Roctify with their own accounts. On the Pro plan, you can add team members, so each helper, employee or agency has a personal login instead of sharing the owner password, and you can remove someone without changing anything for the others.

When you assess a commerce platform, SSO is one question among several about access: can each person have their own account, can you remove access quickly, and how many separate tools does your team need to log in to in the first place. Because Roctify groups the link-in-bio page, storefront, checkout, catalog, email marketing and analytics in one account, there are fewer logins to manage. For larger organisations with specific identity requirements, custom integrations are discussed on the Enterprise plan.

FAQ

Is SSO more secure than separate passwords?

Usually yes, when it is paired with multi-factor authentication. It removes weak and reused passwords, and it lets you cut all access in one place. Without MFA, however, one stolen password can open every connected tool.

What is the difference between SSO and OAuth?

OAuth grants an app permission to access your data on another service. SSO lets one login open many applications. Modern SSO often uses OpenID Connect, which is built on OAuth, so the two share technology but solve different problems.

Does a small store need SSO?

Rarely at first. A solo seller or a team of 3 is well served by a password manager, MFA on every account and individual team logins. SSO becomes worth its cost as the team, the number of tools and the number of contractors grow.