A few simple ideas before we meet the service.

Who are you, really?

Every time you sign in to an application, the system needs to answer a basic question: “Who is this?” A digital identity is the record that answers it. It usually includes a unique name, such as an email address, along with information used to prove it is really you, such as a password, a phone prompt or a physical security key.

Three questions every system asks

Security people talk about three separate steps. Identification is claiming who you are, like saying your name at a door. Authentication is proving it, like showing a photo badge. Authorization is deciding what you are allowed to do once inside, like which floors your badge opens. Cloud Identity mainly handles the first two. The third is handled mostly by a companion service called Identity and Access Management, or IAM.

Why central identity matters

Without a central system, every application keeps its own list of users and passwords. People juggle dozens of passwords and reuse them, which is dangerous. When someone leaves the company, an administrator must remember every place that person had an account. Mistakes leave forgotten accounts open for months. A central identity service gives each person one trusted account, one place to apply security rules and one switch to turn off when they leave.

Google’s identity as a service product for organizations.

Cloud Identity is a managed service that lets an organization create and manage user accounts and groups, control how people sign in, enforce security policies and manage the devices that access company resources. It is sometimes described as an identity as a service, or IDaaS, product. Administrators manage everything from a central web page called the Admin console, and can automate tasks through programming interfaces.

Cloud Identity is the foundation of an organization’s presence in Google Cloud. When you verify your company’s domain name with Cloud Identity, a top-level container called an organization resource is created in Google Cloud. All your projects can live beneath it, which gives you one place to apply security policies and one view of everything your company runs.

Cloud Identity shares a lot of technology with Google Workspace, Google’s productivity suite with email, documents and meetings. Workspace includes the same identity features. Cloud Identity is for organizations that want those identity and security features without the productivity applications, or that already use another email and collaboration suite.

A short dictionary of Cloud Identity words.

Beginners often mix them up, so let us separate them clearly.

Cloud Identity manages who exists in your organization and how they sign in. IAM manages what those identities are allowed to do on Google Cloud resources. You can think of Cloud Identity as the list of people and their badges, and IAM as the rules that say which doors each badge opens.

flowchart LR
    CI[Cloud Identity: users, groups, sign-in, devices] -->|Identities and group memberships| IAM[IAM: roles and permissions]
    IAM -->|Allow or deny| RES[Google Cloud resources: projects, storage, databases, services]
    USER[Person signs in] --> CI
    USER -->|Request access| RES
    RES -->|Ask: is this identity allowed?| IAM
        

The first steps shape everything that follows.

Organizing people so that managing them stays simple.

Users

Each user account has a primary email address, a name and settings such as password rules and sign-in methods. Accounts can be suspended, which blocks sign-in but keeps data, or deleted when no longer needed. Administrators can reset passwords, review sign-in activity and remove access quickly when someone leaves.

Groups

Groups are the most useful tool for scaling access. Instead of granting permissions to fifty individual people, you grant them once to a group and then add or remove members. When someone changes teams, you change their group memberships, and their access updates everywhere that group is used. Groups can also be used as email lists and as the basis for sharing documents, so a single group often serves several purposes.

Organizational units

Organizational units, often called OUs, form a tree like folders on a computer, for example a top-level company OU with child OUs for departments or regions. Settings, such as which services are turned on or which security rules apply, can be applied to an OU and inherited by the OUs below it. Use OUs for settings that differ by part of the organization, and use groups for access that follows roles and teams.

Most companies already have a list of people somewhere.

Organizations rarely start from nothing. They usually have an existing directory, such as Microsoft Active Directory or another directory service, that already holds employees. Typing everyone again would be slow and would create two lists that drift apart. Cloud Identity offers several ways to bring users in.

flowchart LR
    HR[HR system: joiner, mover, leaver] --> DIR[Company directory - source of truth]
    DIR -->|Directory sync or automatic provisioning| CI[Cloud Identity]
    CI --> USERS[Users and groups in Google Cloud]
    DIR -->|Single sign-on authentication| CI
        

One login, many applications.

Single sign-on, or SSO, lets people sign in once and then reach many applications without more passwords. It improves convenience and security at the same time: fewer passwords to forget, reuse or steal, and one place to apply strong sign-in rules.

Two directions of trust

Federation for access without copying accounts

Google Cloud also offers Workforce Identity Federation, which lets people from an external identity provider access Google Cloud resources without first creating a separate Google account for each person. Another feature, Workload Identity Federation, lets software running outside Google Cloud call Google Cloud services without long-lived secret keys. These are related to, but separate from, the Cloud Identity directory, so review the current documentation to decide which fits each need.

sequenceDiagram
    participant U as User
    participant APP as Application
    participant IDP as Identity Provider
    U->>APP: Open the application
    APP->>IDP: Redirect: who is this user?
    IDP->>U: Ask for password and second step
    U->>IDP: Provide proof
    IDP-->>APP: Signed confirmation of identity
    APP-->>U: Access granted without a separate password
        

A password alone is no longer enough.

Passwords are stolen through fake websites, data breaches and guessing. 2-Step Verification adds a second proof, so that a stolen password alone cannot open the account. Not all second steps are equally strong.

Cloud Identity lets administrators require 2-Step Verification, choose which methods are allowed, set enforcement dates with grace periods, and apply stricter rules to sensitive groups. It also provides backup options so a lost phone does not lock someone out forever, and administrators can generate recovery codes.

Trusting not just the person, but the situation.

A correct password from a company laptop in the office is different from the same password from an unknown device in another country at three in the morning. Context-aware access lets administrators write rules that consider the context of a request, such as the user’s group, the device’s security state, the network location and sometimes the time, before granting access to applications and Google Cloud.

Device management complements this. Cloud Identity can register and manage devices, including phones, tablets and computers, and apply policies such as requiring screen locks, encryption and up-to-date software. It can distinguish company-owned from personal devices, and can remotely wipe company data from a lost phone. The idea, often called zero trust, is never to trust a request simply because it comes from inside the corporate network. Each request is checked for who is asking, from what device and under what conditions.

flowchart TD
    R[Access request] --> A{Is the identity verified with strong second step?}
    A -->|No| D1[Deny or ask for more proof]
    A -->|Yes| B{Is the device registered and compliant?}
    B -->|No| D2[Deny or limit access]
    B -->|Yes| C{Is the location or network acceptable?}
    C -->|No| D3[Step up verification or deny]
    C -->|Yes| G[Grant access to the application]
        

Choosing the level that matches your needs.

Cloud Identity is offered in a free edition and a paid Premium edition. The free edition provides core capabilities: creating and managing users and groups, basic security such as 2-Step Verification, and single sign-on for a set of applications. Premium adds more advanced controls, such as stronger device management, expanded application management, automatic user provisioning, additional security reporting and tools, secure directory access for legacy applications, and higher support options. Exact features, limits and pricing change over time, so confirm the current comparison on Google’s website before deciding.

A common real-world headache when organizations start.

Before a company adopts Cloud Identity, employees may have already created personal Google accounts using their work email address. These unmanaged accounts exist outside the company’s control: the company cannot enforce security rules, reset passwords or remove them when staff leave. Once the company verifies its domain, Cloud Identity provides tools to find these accounts and either invite their owners to move to managed accounts, or ask them to change to a different email address.

Handling this early is important. Data created in unmanaged accounts, such as shared documents, may need careful migration, and employees should be told what to expect. Communicate clearly, offer help and set a schedule.

Not every identity is a person.

Applications and scripts also need identities to call services. In Google Cloud these are service accounts. They are managed through IAM rather than as people in Cloud Identity, but they live in the same trust world and should follow the same principles: least privilege, careful ownership and avoiding long-lived secrets.

Knowing what happened and proving it later.

Cloud Identity records administrator actions and user sign-in activity in audit and reporting tools. You can see who created or suspended accounts, who changed security settings, which sign-in attempts failed and from where. These logs can be exported to Google Cloud’s logging and analysis tools, so security teams can build alerts, such as notification when a new super administrator is created or when many failed sign-ins occur.

The most important routine in identity management.

Mostly per-user licensing, plus the effort to run it well.

The free edition of Cloud Identity has no per-user fee, although limits can apply, so check the current terms. The Premium edition is generally priced per user per month. Pricing, minimum commitments and the way editions can be mixed across users change, so always use Google’s current pricing page or talk to a sales representative. Remember related costs: the people who administer identity, the security keys you give staff, any identity provider you also run, and the effort for training and support.

A balanced view.

Habits that keep an identity system trustworthy.

Best practices at a glance

Anti-patterns to avoid

Both provide identity and security features. Google Workspace adds productivity applications such as email, documents and meetings. Cloud Identity is for organizations that want the identity and security capabilities without those applications, or that use other productivity tools.

For an organization, it is the standard way to create managed identities and the organization resource. Individuals can experiment with personal accounts, but organizations should use managed identities for security and control.

Cloud Identity manages who exists and how they sign in. IAM decides what those identities may do with Google Cloud resources.

Yes. Google Cloud Directory Sync and automatic provisioning from external identity providers keep users and groups aligned, and single sign-on can delegate authentication to your existing provider.

It is the most powerful account type. Keep the number small, often two or three for resilience, protect them with security keys, and use them only for rare tasks.

Security keys and passkeys are the strongest because they resist phishing. Authenticator apps and phone prompts are good alternatives, and text messages are the weakest.

It covers core needs such as users, groups, 2-Step Verification and basic single sign-on. Choose Premium when you need advanced device management, automation, broader application integration or additional security tools.

After domain verification, Cloud Identity provides tools to find these unmanaged accounts and invite owners to move to managed accounts or change their email address. Communicate early and plan for data migration.

Service accounts are identities for applications, managed through IAM. They should follow least privilege, avoid long-lived keys and be reviewed regularly, just like people’s accounts.

Immediately, on the same day. Suspend the account, revoke active sessions and tokens, and transfer data ownership. Automating this through your directory or HR system prevents mistakes.

Cloud Identity is the foundation of trust in Google Cloud. It gives each person in your organization a managed identity, groups them for easy administration, lets them sign in once with strong verification, and ties those identities to the organization resource that sits at the top of your cloud structure. Layered on top are context-aware access, device management, provisioning from existing directories and detailed audit trails. The technology works best when paired with good habits: protect super administrators with security keys, require strong second steps, grant access through groups, automate joiners, movers and leavers, and watch for high-risk changes. Do these things, and the identity layer becomes quiet, boring and reliable, which is exactly what you want from the front desk of your digital building.