According to official data from the Government of India, the country reported 2.04 million cybersecurity incidents in 2024, a significant increase from 1.59 million such incidents in 2023. This alarming trend coincides with the emergence of technologies such as artificial intelligence (AI) and the scattering of work across multiple geographical locations. Today, cyberthreats are becoming increasingly sophisticated and persistent, rendering traditional perimeter-based safeguards ineffective.

Secure access service edge (SASE) offers robust threat protection mechanisms to combat malware and unknown attacks. It provides network traffic filtration to regulate and review external activity, and stringent access enforcement as per user identity. In essence, SASE integrates network management with enhanced security.

A look at its benefits, components, use cases and growth outlook…

Key benefits

A core strength of the SASE model is its ability to deliver unified visibility across the entire hybrid enterprise network. Since all wide area network (WAN) traffic passes through the SASE cloud, IT teams can observe and manage every connection from a single vantage point. This makes it easier to track performance trends, identify irregular activity, and ensure that security and compliance policies are consistently applied.

The convergence of networking and security capabilities within one platform, has made operational coordination far more efficient. Shared event data and alert mechanisms allow teams to quickly correlate network incidents with security events, improving detection accuracy. This integration simplifies monitoring processes, reduces the steps needed to troubleshoot problems, and shortens the time between incident detection and resolution.

SASE also allows organisations to extend their security and networking infrastructure to any location without replicating expensive on-premises hardware or deploying separate systems for each site. This results in a lower total cost of ownership, fewer operational silos and reduced administrative effort for IT staff.

From the user’s perspective, the experience is seamless – secure, high-performance access without extra software installations or specialised equipment. Whether employees connect from corporate offices, home networks, or while travelling, they receive consistent performance and the same level of protection, without having to manage complex settings or tools.

Pillars of SASE

The first key pillar of SASE is the secure web gateway (SWG), functioning as a cloud-delivered checkpoint between users and the internet. Its primary role is to safeguard the organisation against online threats while ensuring compliance with corporate usage policies. An SWG performs several critical functions, including blocking access to unsafe or non-compliant websites through URL filtering, detecting and neutralising malicious software via advanced content inspection, and applying fine-grained controls over web-based applications to manage how they are used within the business environment. What makes the SWG especially valuable in a SASE deployment is its ability to direct all outbound and inbound employee web traffic through a centralised inspection process, without adding significant latency, enabling safe and seamless access to online resources.

The second main element of SASE is firewall-as-a-service (FWaaS) or cloud firewall, which provides the following security services: access control, complete traffic inspection, intrusion prevention system, threat detection and prevention, and domain name system security. Unlike next-generation firewall, FWaaS works faster with cloud applications, it makes duplication of security architectures easier, and is more accurate in terms of scrutinising secure sockets layer and transport layer security traffic. FWaaS provides distinct operational advantages. Its scalability allows security coverage to expand or contract in line with business needs, while flexibility ensures it can adapt to evolving application environments and user locations. As it is delivered from the cloud, it also helps reduce capital expenditure on physical hardware and lowers the cost of ongoing maintenance.

The third core element of the SASE architecture is cloud access security broker (CASB), a security layer designed specifically to protect cloud-based applications and resources. Acting as an intermediary between users and cloud services, the CASB enforces enterprise security policies and data loss prevention to ensure that data, applications, and user activities within the cloud remain compliant, secure, and properly governed. It also applies encryption, tokenisation, or masking to sensitive information before it leaves the corporate environment, thus helping to prevent breaches and data leaks. In a SASE framework, the CASB integrates seamlessly with other components such as SWG and zero trust network access (ZTNA), providing visibility and control over cloud traffic regardless of the user’s location or device.

The next essential pillar of the SASE framework is zero trust network access (ZTNA). Like FWaaS, ZTNA is both cost-effective and highly adaptable, making it suitable for organisations of varying sizes and network complexities. One of its key strengths is granular access control, allowing administrators to define policies that limit users to only the applications and data they need for their roles. ZTNA solutions also integrate strong identity verification measures, often leveraging multifactor authentication (MFA), device compliance checks, and context-based access decisions. Furthermore, ZTNA automatically establishes encrypted tunnels between the user and the authorised resource, ensuring that all data in transit remains confidential and protected from interception. Within a SASE architecture, ZTNA plays a critical role in supporting secure remote and hybrid work environments, enabling organisations to provide seamless, secure, and policy-driven access to applications – whether they are hosted on the cloud, a private data centre, or a hybrid environment.

The last pillar of SASE is software-defined wide area network (SD-WAN), a networking technology that intelligently manages and optimises traffic flows across multiple WAN connections. Instead of relying on a single, fixed path – common in traditional WAN setups – SD-WAN dynamically routes data through the most efficient available channel, whether that’s broadband, multiprotocol label switching (MPLS), LTE/5G, or other network links. This approach ensures maximum connectivity, improved bandwidth utilisation, and greater resiliency against outages or congestion. For remote and distributed employees – especially those who rely heavily on cloud-hosted applications and services – SD-WAN enhances productivity by automatically prioritising critical business applications over less essential traffic. It uses application-aware routing to identify and direct latency-sensitive services such as videoconferencing, VoIP and real-time collaboration tools over the best performing link. This results in faster response times, reduced packet loss and a more stable connection overall. SD-WAN also contributes to a seamless user experience by providing failover capabilities; if one network path becomes slow or unavailable, traffic is instantly redirected to another link without disrupting ongoing sessions.

Major use cases

SASE combines networking and security to address modern IT needs. Its key applications include:

  • Hybrid workforces: When utilised in large quantities, virtual private networks (VNPs) – the traditional remote work approach – might be too expensive. Unlike VPNs, which connect a single user to a single network, SASE creates a secure network perimeter. It delivers scalable, low-latency connectivity, strong security and visibility into user performance.
  • Branch/Retail connectivity: SASE surpasses usual data centre methods by optimising bandwidth and guaranteeing dynamic security using next-generation SD-WAN. It enforces consistent security policies, reduces cost, and supports zero trust principles.
  • Cloud and digital transformation: It removes hardware limits, integrates artificial intelligence/machine learning (AI/ML) threat detection, and streamlines branch deployments.
  • Global connectivity: SASE uses globally distributed cloud points of presence (since it is cloud-based and data centre backhauling is not necessary) to minimise latency and ensure consistent performance worldwide.
  • Supply chain security: Organisations need to allow partners and third-party vendors to access resources and applications. The SASE model can provide solutions, such as a ZTNA adoption cycle, for  third-party access use cases.
  • MPLS to SD-WAN migration: Conventional MPLS networks are expensive and rigid. They might impede an enterprise’s agility and scalability due to high capital investment and lengthy deployment times. Meanwhile, SD-WAN offers a faster, more cost-effective, and flexible alternative to MPLS, improving agility and resiliency.

Impact of emerging technologies

As AI, automation, 5G and edge computing advance, SASE will evolve from a policy engine into an adaptive, self-optimising fabric. AI will continuously learn normal user and device behaviour to spot anomalies in real time, refine policies automatically, and predict performance bottlenecks before they impact users. Automation will drive zero-touch provisioning and intent-based changes, shrinking roll-out times from days to minutes while keeping configurations consistent across sites. Native 5G integration, including network slicing, will let SASE steer latency-sensitive traffic (like unified communications-as-a-service, augmented reality/virtual reality, and telemetry) over the best path with deterministic performance. With regard to edge computing, local inspection and policy enforcement near users and devices will cut round-trip latency, protect IoT workloads, and keep data residency intact, this will result in a smarter, faster and more adaptable security and networking platform that aligns protection with business intent and scales effortlessly as applications and users move.

Outlook

SASE is rapidly transitioning from an emerging trend to a fundamental standard for enterprises. Dell’Oro expects the global SASE market to grow to $17 billion by 2029, representing a 12 per cent CAGR. Meanwhile, Gartner forecasts that by 2028, 70 per cent of SD-WAN procurements will be part of a single-vendor SASE platform offering, up from 25 per cent in 2025. Further, IDC anticipates that the spending in India’s security market will reach $4.8 billion by 2027, growing at a CAGR of 14.9. As AI, automation, 5G and edge computing mature, SASE will become increasingly intelligent, efficient and adaptable.