In today's digital landscape, securing access to data and applications is more critical than ever. CASB (Cloud Access Security Broker) protects cloud-based applications and data, offering visibility, control, and compliance across cloud environments. It helps organisations monitor usage, enforce security policies, and ensure compliance. On the other hand, ZTNA (Zero Trust Network Access) provides secure access to network resources. This is achieved by verifying the identity of users and devices, regardless of their location. When considering CASB vs. ZTNA, it's essential to understand that while CASB secures cloud applications, ZTNA secures network access with a zero-trust approach.
A Cloud Access Security Broker (CASB) is a security tool between cloud service consumers and providers, helping organisations enforce security policies for cloud applications. It extends security controls beyond the traditional network perimeter, ensuring data protection, compliance with regulations, and threat mitigation. CASB offers visibility into cloud usage, monitors activities, and helps organisations manage access, ensuring that sensitive data remains secure while meeting regulatory requirements.
Zero Trust Network Access (ZTNA), also known as Software-Defined Perimeter (SDP), is a security technology that allows authorised users to access specific private applications without granting access to the entire corporate network. ZTNA ensures that access is only granted after verifying the user's identity and context, enforcing a "never trust, always verify" approach. This controls the threat of unauthorised access and protects sensitive resources, making it a crucial part of modern cybersecurity strategies.
A Cloud Access Security Broker (CASB) is a key security tool that helps organisations secure their cloud services. It provides visibility, control, and protection for cloud applications and data. The core functions of a CASB include:
The core functions of ZTNA include:
Both Cloud Access Security Broker (CASB) and Zero Trust Network Access (ZTNA) are essential security technologies. However, they serve different purposes and function in distinct ways. While CASB is focused on securing cloud environments, ZTNA is designed to manage secure access to internal applications. Understanding their differences is essential for organisations implementing the right security strategy.
Aspect | CASB | ZTNA |
Purpose | Secures cloud environments. | Governs access to internal applications. |
How it works | Acts as an intermediary between users and cloud apps, enforcing policies. | Verifies user identity to grant access to specific apps, denying access by default. |
Features | Provides visibility into cloud usage and detects threats. | Offers granular access controls and strong authentication mechanisms. |
Risks | Expensive and complex to implement. | Vulnerable to compromised credentials. |
Application coverage | Focused on cloud apps and data. | May not cover legacy or on-premises apps. |
CASBs provide a range of features that help manage cloud security risks and compliance. Here are some situations where CASB is particularly beneficial:
When considering CASB vs. ZTNA, CASB is particularly suited for cloud-specific security needs, while ZTNA focuses on controlling access to internal network resources.
Zero Trust Network Access (ZTNA) is a powerful security model that provides enhanced protection. It verifies every user and device before granting access to any resources. This can be particularly beneficial in various scenarios to reduce risks and strengthen network security.
The decision between ZTNA and CASB depends on your organisation’s specific needs. If your primary focus is securing access to internal applications across your network, ZTNA should be your go-to solution. However, if your organisation operates heavily in the cloud and needs to manage access, compliance, and security of cloud applications, CASB is essential. In many cases, combining both solutions provides a comprehensive security framework, with ZTNA securing the network perimeter and CASB ensuring cloud security.
Having both ZTNA and CASB is often the most effective approach, as they complement each other to provide comprehensive security across your entire infrastructure—network and cloud. That’s why it’s essential to carefully evaluate your organisation’s needs, and this is where a Managed Service Provider (MSP) can be an invaluable partner. An MSP can help assess your specific requirements, advise on the best combination of ZTNA and CASB for your environment, and ensure seamless implementation. With their expertise, an MSP will ensure both solutions work in harmony, delivering robust, unified security across your organisation’s network and cloud environments.
CASB and ZTNA play crucial roles in securing modern enterprise environments but serve different purposes. CASB focuses on securing cloud applications and ensuring compliance, while ZTNA ensures secure, granular access to internal resources, regardless of location. CASB is ideal for managing cloud data and services, while ZTNA excels at controlling access to sensitive network resources. Choosing the right solution is made based on your organisation's specific needs—cloud security or network access control.
Tata Communications offers advanced solutions to help businesses implement CASB and ZTNA effectively. Their expertise in network security ensures your cloud and network access is protected, assisting organisations in reducing risks and maintaining compliance. With Tata Communications, businesses can seamlessly integrate CASB and ZTNA, tailoring them to their unique security needs. Learn how Tata Communications can enhance security with ZTNA solutions. Reach out today to learn more about how we can protect your cloud and network access.