SDP or Software-defined perimeter is a security approach that allows access to core functions according to user’s identity and the context-dependent trust level. The conventional security method is limited to the data center, whereas SDP is a cloud-based security approach that can be implemented everywhere. SDP leverages business policy to regulate user verification to sources, thereby becoming a vital aspect of securing organizations that prioritize mobile-first and cloud-first strategies. 
In the current era of hybrid work environments, the traditional network perimeter, which is defined by hardware and intended for a corporate setting, is no longer effective. The use of an SDP solution available in software defined perimeter market helps to distribute network resources evenly and minimize the risk to endpoints that connect from any location. These resources are allocated on a single basis, ensuring centralized and simplified access control, and thus providing secure access in the organization.
Businesses are using the Internet as a new network medium and, conventional on-premises solutions are no longer sufficient to create secure network connections. The increasing popularity of BYOD has made this issue even more dominant, providing an opportunity for unauthorized users and hackers to gain access. By implementing an SDP model, users can be granted access based on the rule of minimum privilege, which is similar to micro-segmentation.
Applications of SDP solutions:
Software-defined perimeter controller has various use cases in businesses. Some major uses are described below:
- Finding a VPN Substitute: Many companies are exploring ways to decrease or eliminate the use of VPNs because they hinder user involvement, lead to security threats, and are challenging to maintain. However, SDPs can handle these major VPN problems by enhancing remote access ability. According to Cybersecurity Insiders, 41% of companies are planning to reassess their secure access infrastructure and integrate SDP, with most of them needing a hybrid IT deployment, and 25% applying SaaS.
- Security Multi-cloud Access: Some corporations opt for a multi-cloud approach, which involves integrating different services such as Workday and Microsoft 365, alongside infrastructure services provided by AWS and Azure. Additionally, they may utilize cloud platforms for expansion purposes, cloud storage, and other functions. To protect these environments, businesses turn to SDP solutions due to their capability to protect connections according to policy regardless of where users join or where applications are introduced.
- Reducing Third-Party Risks: Overprivileged access granted to third-party consumers can create security vulnerabilities for the organization. By implementing SDPs, the risk posed by third-party users can be reduced as they are prevented from gaining admission to the network. Additionally, authorized users are restricted to only accessing the applications they are allowed to use, further enhancing security.
- Increasing M&A Combination: Incorporation of IT can often take years with conventional unions and acquisitions, as companies must deal with complex procedures such as network convergence and intersecting IP addresses. However, with the help of an SDP, the integration process can be simplified significantly, resulting in a much shorter time frame for an effective M&A. Furthermore, this approach can provide instant benefits to the business.