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Having a robust access control model is critical for every business. Unauthorized access can lead to data breaches, and a lack of legitimate, straightforward access options can harm the user experience. The solution, or at least one of them, is Role-based access control (RBAC).
By tying access permissions to users’ specific roles, RBAC provides a secure, efficient way to safeguard sensitive information. In this article, we’ll explore what is RBAC, how it works, the concepts that underpin it, and the different models you can use to tailor access control to your needs.
Below, we’ll cover:
The RBAC definition and how it works
Different types of RBAC and similar approaches
Benefits of RBAC, beyond security and compliance
How to implement RBAC, and real-world examples of it
What is RBAC?
RBAC—short for Role-Based Access Control—is a user authorization method that controls access to protected resources based on the user’s role within the organization. Instead of granting permissions directly to the users, the permissions are assigned to specific roles, and users are assigned to these roles.
This access control approach simplifies management and ensures that users have access only to the resources they need to perform their job duties. For example, in a hospital system:
A Doctor role might have permission to view and edit patient records.
A Nurse role might have permission to view records but not edit them.
A Receptionist role might have permission to schedule appointments but no access to medical records.
While RBAC is widely used today, the underlying technology and principles it is built on are half a century old. The National Institute of Standards and Technology (NIST) traces the history of RBAC back to the 1970s. The version we commonly use today originated in 1992 when computer scientists Ferraiolo and Kuhn introduced a model that was refined into an industry-wide standard by 2004.
Since then, RBAC has become one of the most common and effective access control methods, with no signs of slowing down.
How does RBAC work?
As the name suggests, the central concept in RBAC is the role. This aspect of the user profile ultimately determines the resources and the type of access they get. Roles may be tied to the person’s job title or position within a company, or to the functions and responsibilities.
Common example roles include: Admin, Manager, Editor, and Viewer.
Users can also hold multiple roles, which may be dynamic rather than static. For instance, temporary or seasonal roles may change over time. What makes the role most important in RBAC is its relationship to permissions. Roles define what permissions the user has.
Permissions refer to the ability to access information and perform certain functions within a given app or system. For example, a user may have permission to read certain documents but not edit them, or they might be able to edit a file but not view the complete edit history, delete it, or change its location. Access depends on their assigned permissions.
Some common examples of permissions include Create, Read, Update, Delete (CRUD). A hypothetical set of roles using the CRUD scheme could thus be:
Admin: Full CRUD permissions
Editor: Create and Update permissions
Viewer: Read-only permissions
In some RBAC deployments, roles define permissions, whereas in others, roles are seen as a set of permissions granted to a user. Regardless of the type of RBAC, roles and permissions together control user access. For example, Alice (Manager) may be able to approve budgets but not delete system configurations, while Bob (Viewer) can view reports but not modify them.
In summary, the key components of RBAC are:
Roles: Defined based on job functions (e.g., "Admin," "Manager," "Viewer").
Permissions: Specific actions or access rights assigned to roles (e.g., "Read," "Write," "Delete").
Users: Individuals assigned to one or more roles based on their responsibilities.
Rules: Policies dictating which roles have access to what resources.
What are the different types of RBAC?
Just as three core concepts govern all RBAC (roles, permissions, and user access), there are three main types of RBAC into which the most common deployments fall:
Traditional – This is the most basic form of RBAC, serving as the foundation for other variations. Users are assigned roles that define their permissions (e.g., a “Manager” can view all their direct reports’ logged activities, while these reports can only view their own logs). The user is authenticated, and their assigned role then determines what actions are authorized.
Constrained – In these models, users have restricted capability to hold multiple roles and permissions simultaneously. This prevents users and potential attackers from performing potentially exploitable actions. For example, a user cannot simultaneously hold both the “Payment Requester” and “Payment Approver” roles, preventing fraud.
Hierarchical – These models categorize roles based on levels of access permissions. Higher-level roles (i.e., administrators) have greater access, whereas lower-level roles (i.e., guests) have fewer permissions. For instance, in a content platform, an “Editor” role inherits all “Viewer” permissions and adds editing access, while a “Publisher” role inherits all “Editor” permissions and adds the ability to publish.
Many deployments are hybrids that incorporate elements of constraint or hierarchy to some or all of the system, depending on adopters’ needs and risks.
Read more: Fine-Grained Authorization Explained & When to Use It
RBAC vs. other access control models
There are many versions and iterations of RBAC, not to mention access control in general. Other models that can be used instead of (or in addition to) RBAC include:
Relationship-based access control (ReBAC): A relatively newer approach, where the access permission depends on the relationship between the user and the resource. ReBAC is effective for creating authorization frameworks where hierarchies, nesting, and collaboration are required. Explore the difference between RBAC and ReBAC for more details.
Attribute-based access control (ABAC): Similar to RBAC, but authorizing decisions are based on individuals’ attributes, including but not limited to their role. Although highly customizable and accurate, ABAC can be resource-intensive. Explore the difference between RBAC and ABAC for more details.
Rule-based access control (RuBAC): The most customizable model available, where access decisions are based on any parameters deemed appropriate, including some external or unrelated to the user. This model is well-suited for settings with larger user bases.
Mandatory access control (MAC): Limits access based on the sensitivity of the data in question. Greater security means reduced overall accessibility and ease of use.
Discretionary access control (DAC): Typically allows users with granted access the authority to control others’ access. While it offers flexibility, security concerns can arise depending on the application or resource being accessed.
Compared to these other access control models, RBAC offers a happy medium of accessibility and security, which makes it an ideal fit for a wide range of B2B authentication use cases and adopter needs.
7 benefits of RBAC
RBAC helps organizations streamline access control across various users. Its benefits start with security but also include things like efficient regulatory compliance, positive UX, less workload for IT teams, increased scalability, better transparency, and overall cost savings.
Despite these benefits, there are potential downsides. Namely, organizations must guard against role explosion and avoid creating an excessive number of roles to handle nuanced use cases. Explore our blog, Coarse-Grained vs. Fine-Grained Authorization, to learn more about how to avoid this pitfall while maximizing the benefits of RBAC.
Security
RBAC offers several clear benefits, with one of the most immediate being security. Access control is one of the key pillars of cyber defense, ensuring that sensitive data is only accessible to authorized individuals and thus preventing data breaches.
Regulatory compliance
Beyond being critical to keeping systems safe, RBAC is crucial for meeting regulatory compliance requirements. Many frameworks, such as HIPAA for healthcare data, the EU's GDPR for data protection, and PCI DSS for payment card information security, mandate stringent access control measures. RBAC addresses these requirements with straightforward and effective controls, keeping the organization compliant.
User-friendliness
RBAC is also highly user-friendly when implemented correctly. From the user’s perspective, it seamlessly integrates with standard login and account management processes. Users' roles inherently manage access, allowing them to focus on their tasks without being burdened by security complexities.
Reduced IT overhead
RBAC significantly reduces IT workload. Teams no longer need to manually update individual user permissions, making processes like user onboarding and offboarding, adjusting permissions across different tenants, and upgrading access levels more streamlined and efficient.
Scalability
Another advantage of RBAC is scalability. As organizations grow, adding new users or updating permissions is as simple as assigning roles, ensuring a seamless transition when roles or organizational structures evolve. However, organizations must guard against role explosion and avoid creating an excessive number of roles to handle nuanced use cases.
Transparency
RBAC also promotes organizational transparency. By defining roles clearly, teams across departments can better understand who has access to what and why. This helps with audits and builds trust, as employees know their access is based on a structured, need-to-know basis rather than arbitrary assignments.
Cost savings
Finally, RBAC can lead to significant cost savings. By reducing the time IT teams spend on manual permission management and minimizing potential downtime from security incidents, organizations can reallocate resources to other priorities. This efficiency, combined with relatively manageable implementation times, makes RBAC one of the most cost-effective strategies for access control and account management.
How to implement RBAC
The specifics of RBAC implementation will vary based on the organizational environment and app architecture. That said, it usually breaks down into five steps (see below).
It’s important to monitor for and address common RBAC pitfalls, such as role explosion and overly broad permissions, which can arise from failing to audit or review permissions over time.
Assess organizational needs
Determine if RBAC is suitable for your organization and identify the specific type of RBAC that best aligns with your organization's needs. If teams are small and individual employees’ responsibilities are fairly straightforward, then a simpler deployment like traditional RBAC may suffice. If most employees are wearing multiple hats, or lines are otherwise blurred, a more restrictive, hierarchical approach may be needed.
Define roles and permissions
Clearly outline roles and permissions, including any hierarchies or dynamic elements relevant to your organization. A good place to start is creating a robust, granular inventory of all individuals’ roles, data needs, daily activities, and sensitivities (e.g., security and/or compliance concerns).
Create policies and procedures
Establish policies and procedures for role assignment and account management for a structured approach. If you’ve created an inventory of all users’ activities and needs, you can determine the most efficient way to distribute permissions. For example, if all managers need to be able to edit contracts, that role can be assigned the permission inherently. If only managers in a certain department need that permission, then it shouldn’t be granted to all managers automatically.
Map roles to users
Assign roles to users and provide training so they understand their role(s), permissions, and responsibilities. Make sure users understand why a given role has the responsibilities it does and how to request access or other permissions (if applicable) when needed. All users should also know how to report any slippages or instances in which they’re able to access information or systems they shouldn’t be able to.
Test the system
Be sure to evaluate the system's effectiveness and security, along with whether and how it meets regulatory compliance standards. For example, PCI DSS, which applies to organizations that collect credit card payments or handle cardholder data, requires specific access control configurations that RBAC may need to meet. Testing against standards like the principle of least privilege will help ensure RBAC is helping rather than hampering organizational compliance.
RBAC use cases and real-world examples
RBAC implementations vary widely depending on organizational needs and means. Here are some examples of what effective RBAC can look like in different contexts:
B2B SaaS companies likely need RBAC solutions that meet the needs of a diverse client list. Tenant-aware RBAC streamlines multi-tenant systems with uniform policies that accommodate various sensitivities and compliance concerns.
Healthcare organizations need RBAC deployments that meet the demands of HIPAA compliance, such as preventing unauthorized access to PHI as defined in the Privacy Rule. Strict permissions help ensure only authorized users can access PHI.
Merchants, e-commerce, and some financial organizations need to adhere to PCI DSS requirements. RBAC can help satisfy PCI’s Strong Access Control Measures, such as Requirement 7’s mandate for access restriction by business need.
Outside of industry-specific considerations, RBAC configurations can also meet different internal or departmental needs. IT team members’ roles and permissions may operate differently from general admins’ or other users’ roles and permissions regarding enterprise productivity tools.
RBAC made easy with Descope
RBAC is one of the most effective and widely adopted access control models available — and for good reason. By tying permissions to roles rather than individual users, it simplifies access management, reduces IT overhead, and scales cleanly as organizations grow. It supports regulatory compliance across frameworks like HIPAA, GDPR, and PCI DSS, and strikes a practical balance between security and usability that more granular models like ABAC or ReBAC may sacrifice.
For most organizations, RBAC is the right starting point, and in many cases, the right long-term foundation, especially when layered with fine-grained controls where complexity demands it.
Descope is a no-code CIAM platform that helps B2B app builders add tenant-aware RBAC (as well as ReBAC and ABAC) to their applications. Coupled with SSO, SCIM provisioning, tenant management, and MFA, this enables B2B app teams to delight their enterprise customers without spending unending developer cycles on in-house implementation.
Sign up for a Free Forever account with Descope and start building secure, scalable auth flows today. Have questions about RBAC or CIAM implementation? Book time with our experts.
