Simplicity: Because each device is centrally managed, with routing based on application policies, WAN managers can create and update security rules in real time as network requirements change. Also, when SD-WAN is combined with zero-touch provisioning, a feature that helps automate the deployment and configuration processes, organizations can further reduce the complexity, resources, and operating expenses required to spin up new sites. * Improved performance: By allowing efficient access to cloud-based resources without the need to backhaul traffic to centralized locations, organizations can provide a better user experience.

A perimeter-based network security strategy relies on firewalls, routers, and other devices to create a boundary between the internal network and the external network. This strategy assumes that every internal endpoint can be trusted, and that any threat comes from outside the network. However, this assumption is flawed, as internal endpoints can also be compromised by malware, phishing, insider attacks, or other methods. Once an attacker gains access to an internal endpoint, they can use it to move laterally within the network, bypassing the perimeter defenses. Therefore, a perimeter-based network security strategy is not sufficient to protect an organization's endpoint systems, and a more comprehensive approach, such as Zero Trust, is needed. Reference:
Palo Alto Networks Certified Cybersecurity Entry-level Technician (PCCET) Traditional perimeter-based network defense is obsolete-transform to a Zero Trust model What is Network Perimeter Security? Definition and Components | Acalvio

One of the best practices for securing sensitive data in SaaS applications is to control the access and usage of data based on the device type. Managed devices are those that are enrolled and monitored by the organization's IT department, and have security policies and controls applied to them. Unmanaged devices are those that are not under the organization's control, such as personal laptops or mobile phones. Allowing downloads to managed devices but blocking them from unmanaged devices prevents data leakage and unauthorized access to sensitive data. This can be achieved by using a cloud access security broker (CASB) solution, such as Prisma SaaS from Palo Alto Networks, which can enforce granular policies based on device posture, user identity, and data sensitivity 12. Reference: 1: Securing SaaS applications on the cloud is a critical aspect of protecting sensitive data and maintaining the trust of customers. By implementing best practices, such as enhanced authentication, data encryption, Break Glass, and oversight, organizations can mitigate the security risks associated with SaaS applications2: Prisma SaaS - Palo Alto Networks

Automation in SOAR (Security Orchestration, Automation, and Response) is the process of programming tasks, alerts, and responses to security incidents so that they can be executed without human intervention. Automation in SOAR helps security teams to handle the huge amount of information generated by various security tools, analyze it through machine learning processes, and take appropriate actions based on predefined rules and workflows. Automation in SOAR also reduces the manual effort and time required for security operations, improves the accuracy and efficiency of threat detection and response, and provides consistency in handling security issues across different environments and scenarios. Reference: What is SOAR (security orchestration, automation and response)? | IBM, What Is SOAR? Technology and Solutions | Microsoft Security, Security orchestration - Wikipedia.

North-South traffic refers to the data packets that move between the virtualized environment and the external network, such as the internet or a traditional data center. This traffic typically involves requests from clients to access applications or services hosted on virtual machines (VMs) or containers, or responses from those VMs or containers to the clients. North-South traffic can also include management or monitoring traffic from external devices to the virtualized environment. Reference: Fundamentals of Cloud Security, East-West and North-South Traffic Security, What is the meaning / origin of the terms north-south and east-west traffic?