Most companies today do not run on just one cloud. They use two, three, sometimes more. AWS for some workloads. Azure for others. Google Cloud maybe for specific tools. And then a mix of SaaS apps sitting on top of all of it.
That setup works well for flexibility. But it creates a real headache when it comes to identity management.
Who has access to what? Which account is connected to which system? What happens when someone leaves the company? These questions get harder to answer as the number of environments grows.
This post is about how to think through identity management in a multi-cloud world without making it more complicated than it needs to be.
Why Multi-Cloud Makes Identity Harder
When everything was on-premise, identity was simpler. You had Active Directory. You had your internal network. People logged in from office machines. Access was fairly contained.
Cloud changed all of that. Users now access systems from anywhere. Applications live across multiple platforms. Contractors and external partners need access too, sometimes. And every cloud provider has its own identity system with its own rules, its own roles, its own way of doing things.
The result is that identity becomes fragmented. The same person might have four different accounts across four different platforms. Some of those accounts may have outdated permissions. Some might not have multi-factor authentication enabled. A few might belong to people who left six months ago.
None of this is intentional. It just happens when things grow fast and no one is specifically watching the identity layer across all environments at once.
The Real Risks of Fragmented Identity
It is worth being clear about why this matters. It is not just about tidiness or good housekeeping.
Fragmented identity creates actual security risk.
When accounts exist that nobody is actively managing, those accounts can become entry points for attackers. Stale credentials, old service accounts, unused access keys sitting in a cloud environment. These are real vulnerabilities.
There is also the risk of over-permissioned accounts. In a busy team, the easiest thing is to give someone broad access so they can get their work done without constantly asking for permissions. Over time this becomes the norm and people end up with far more access than they actually need. This is called privilege creep.
And then there is the compliance side. Many industries require organisations to demonstrate that access controls are in place and that they can account for who has access to what. When identity is scattered across multiple clouds with no central view, passing a compliance audit becomes very difficult.
Start With a Clear Inventory
Before you can fix anything, you need to know what you are dealing with.
That means doing an identity audit across all your cloud environments. List every account, every role, every service principal, every API key. It sounds like a lot of work and it probably is. But you cannot manage what you cannot see.
During this audit you will likely find things that surprise you. Accounts for people who left. Services with admin-level permissions that only need read access. Duplicate identities for the same person across different platforms.
Document all of it. Do not delete anything yet. Just get a clear picture first.
Once you have that picture, you can start making decisions about what to consolidate, what to clean up, and what to keep as-is.
Centralise Identity Where You Can
One of the most effective things you can do is bring identity back to a single authoritative source.
This usually means picking one identity provider and federating it across your cloud environments. Rather than each platform managing its own user database, they all point back to the same central directory for authentication.
Most major identity providers support federation with AWS, Azure, Google Cloud, and the common SaaS platforms through standards like SAML and OpenID Connect. The technical setup varies but the principle is consistent. One place where users are created and managed. One place where access is granted or revoked.
When someone leaves your organisation, you deactivate them in the central directory and that change flows out to every connected system. No more manually hunting down accounts in five different places.
Teams exploring this approach often look at identity management solutions that are built to work across multiple environments rather than being tied to one cloud vendor.
Role-Based Access Control Needs Consistent Logic
Every cloud platform has role-based access control. The problem is that each one names and structures roles differently.
AWS uses IAM with its own policy language. Azure has its own role definitions. Google Cloud has another approach. When these exist in silos, you end up with access policies that are hard to compare or audit.
The goal should be to bring some consistency to how roles are defined across environments. Not necessarily identical naming but a common logic.
Think about your access tiers. Who needs read-only access? Who needs write access to specific resources? Who needs admin-level permissions and why? Define those tiers in terms that make sense for your organisation and then map them to the native roles in each cloud platform.
This way, when you grant someone “developer access,” everyone understands roughly what that means across all environments even if the underlying technical implementation differs.
Least Privilege Is a Principle Worth Actually Following
You have probably heard the phrase “least privilege” before. It means giving people only the access they need to do their specific job and nothing more.
In theory everyone agrees with this. In practice it gets ignored a lot.
The reason is that least privilege requires effort. You have to understand what each person or service actually needs. You have to define fine-grained roles rather than just assigning broad admin access. And you have to revisit those permissions regularly as roles change.
It is easier in the short term to give broad access. But this builds up over time into a permissions landscape that nobody fully understands.
A practical way to start is to focus on your highest-risk accounts first. Production environment access. Database access. Billing and cost management. Start tightening permissions in those areas and work outward from there.
Service Accounts and Machine Identities Need Attention Too
A lot of identity management conversations focus on human users. But in multi-cloud environments, a huge portion of identity complexity comes from machine identities.
Service accounts, API keys, deployment pipelines, automation scripts. These all need credentials to interact with cloud resources. And they are often even messier than human identities because they get created quickly for specific tasks and then never cleaned up.
Service accounts that are no longer used but still have valid credentials are a significant security risk. If one of those keys gets exposed, an attacker can use it to access your systems and it might take a long time before anyone notices.
Include machine identities in your audit. Apply the same least privilege principles. Rotate credentials on a schedule. And when a service account is no longer needed, deactivate it promptly.
Multi-Factor Authentication Everywhere, Not Just Some Places
This should go without saying but it is still not universal.
MFA should be required for all accounts across all cloud environments. Not just for admin accounts. Not just for sensitive systems. All accounts.
The resistance usually comes from convenience. MFA adds a step. People find it annoying. But the protection it provides against compromised credentials is significant and the inconvenience is genuinely small compared to the risk of not having it.
If your identity provider supports enforcing MFA centrally, use that. It is easier to enforce a policy once than to configure and monitor it separately in every cloud environment.
Build in Access Reviews on a Schedule
Permissions change over time. People change roles. Projects end. Teams restructure. But the access that was granted for an old role often stays in place long after it is no longer needed.
Access reviews are the process of periodically going through who has access to what and asking whether that access is still appropriate. For many organisations a quarterly review is a reasonable starting point. For higher-risk environments, more frequent reviews make sense.
The reviews do not have to be exhaustive every time. A risk-based approach works well. Focus each review cycle on the most sensitive systems and high-privilege accounts. Do a broader sweep less frequently.
The important thing is that it happens on a schedule rather than only when something goes wrong.
Organisations using centralised identity platforms often find that automated access review features make this process significantly less painful than doing it manually across each cloud environment separately.
Logging and Visibility Cannot Be an Afterthought
You need to be able to see what is happening across your identity layer.
Who logged in from where? What did they access? Were there any failed authentication attempts? Did any accounts suddenly start accessing resources they have never touched before?
Every major cloud provider has logging capabilities for identity events. The challenge in a multi-cloud environment is that these logs live in different places and use different formats.
Pulling those logs into a centralised logging or SIEM platform gives you a unified view. You can set up alerts for unusual patterns. You can run investigations across all environments from one place. And when something does go wrong, you have the audit trail you need to understand what happened.
Setting this up takes some effort. But operating without it means you are essentially flying blind.
Governance Does Not Have to Mean Bureaucracy
A common concern when identity governance comes up is that it will slow everything down. Too many approval steps. Too much process. Developers waiting days to get access to the tools they need.
It does not have to work that way.
Good governance means having clear, consistent policies and automating as much of the enforcement as possible. When access requests are handled through a system with pre-approved roles and automated provisioning, the process can be fast and the governance is still maintained.
The goal is not to make access hard to get. It is to make sure that access is always appropriate and visible. Those two things can coexist.
When Complexity Stops Being the Enemy
Managing identity across multiple clouds will never be completely simple. There are too many moving parts for that.
But there is a difference between complexity that you understand and complexity that is just chaos you have not looked at yet.
When you have a central identity source, consistent access logic, regular reviews, proper logging, and enforced MFA, the environment is still complex but it is manageable. You can answer questions about who has access to what. You can make changes confidently. You can demonstrate to auditors or security teams that controls are in place.
That is the real goal. Not eliminating complexity entirely but getting to a point where the complexity is organised and visible rather than sprawling and unknown.
Getting there is a gradual process. Most organisations do it in stages. The key is to start, pick one area to improve, and build from there.
