How IAM works
An IAM system keeps a record of identities and their attributes, typically sourced from HR systems or a directory. It authenticates users, often with single sign-on and multi-factor authentication, and then authorizes access based on roles, attributes or policies.
Lifecycle processes matter as much as logins. New staff receive appropriate access, role changes adjust it, and departures remove it promptly. Privileged access management adds tighter control and recording of administrator and service accounts. Modern programs increasingly use conditional access, which evaluates signals such as device health, location and risk level before granting access, instead of relying on a password alone.
Why it matters for Canadian organizations
Stolen or misused credentials are among the most common ways attackers get in. Strong identity controls limit what a compromised account can reach and make suspicious sign-ins easier to detect.
Canadian privacy laws such as PIPEDA and Quebec Law 25 expect safeguards that limit access to personal information to those who need it. IAM also produces the evidence auditors and regulators ask for, such as who had access, when and why. Machine identities matter as well, since service accounts, API keys and automation credentials often outnumber human users and are frequently overlooked in reviews.
How to implement it
Establish a single authoritative source of identities, enforce multi-factor authentication everywhere practical, and apply least privilege through roles. Automate onboarding and offboarding.
Review access on a schedule, manage privileged and service accounts separately, and log authentication events to a central monitoring platform. Plan for cloud applications and partners, not only on-premises systems. Start with the highest-risk systems and administrator accounts, then expand coverage, because trying to fix every application at once tends to stall the project. Test the process with a pilot group.
Frequently asked questions
What is the difference between authentication and authorization?
Authentication verifies who you are, for example with a password and a second factor. Authorization decides what you are allowed to do once identified. IAM manages both, along with the lifecycle of the accounts involved.
What is the difference between IAM and PAM?
IAM manages identities and access for all users. Privileged access management is a specialized subset that secures, controls and records powerful accounts such as administrators and service accounts. Most organizations need both, with PAM layered on a sound IAM foundation.
Does IAM require single sign-on?
No, but single sign-on is a common component because it centralizes authentication, reduces password fatigue and makes enforcing multi-factor authentication and revoking access simpler. IAM can exist without it, though administration becomes harder.
Related service: Identity and access management