What Is Changing
India’s enterprise connectivity market is undergoing a fundamental shift. MPLS (Multiprotocol Label Switching) networks, which have been the dominant enterprise wide-area networking technology for two decades, are being progressively replaced or supplemented by fiber leased line services combined with SD-WAN (Software-Defined WAN) overlays. According to Gartner Enterprise Networking in India Report 2023, Indian enterprise spending on SD-WAN and fiber-based connectivity grew by 35 percent in 2022-23, while MPLS-only spending declined by 12 percent. This shift reflects both the economic advantage of public internet fiber over private MPLS networks and the technology advancement of SD-WAN, which delivers traffic management and quality-of-service capabilities over public fiber that were previously only available through private MPLS.
What Is Driving the Change
Three factors are driving enterprise adoption of fiber leased line services as the primary connectivity layer. First, cost: dedicated fiber leased lines operating on public internet infrastructure are significantly cheaper per Mbps than equivalent MPLS private network bandwidth. As cloud applications have moved the majority of enterprise traffic to the internet anyway, the private network path of MPLS becomes less relevant and its cost premium harder to justify.
Second, bandwidth scale: fiber leased line services can economically provide bandwidths from 100 Mbps to 10 Gbps. Equivalent MPLS bandwidths at multi-gigabit scale are not economically practical for most enterprises. The traffic volumes generated by cloud infrastructure, video conferencing at scale, and data-intensive business applications require bandwidth headroom that MPLS cannot provide at reasonable cost.
Third, cloud-first architecture: enterprises that have moved the majority of their applications to cloud platforms (AWS, Azure, Google Cloud) route most of their traffic to internet destinations. The traditional MPLS model, which routes all traffic through a central data center hub, adds latency to cloud-bound traffic. Fiber leased line services with direct cloud on-ramps (AWS Direct Connect, Azure ExpressRoute, Google Cloud Interconnect) provide lower-latency paths to cloud infrastructure than MPLS-to-hub-to-internet routing.
Who It Affects and How
Mid-size enterprises and large enterprise branch locations are the most significantly affected by this shift. Headquarters locations of large enterprises have often already made the transition; branch offices connected via legacy MPLS links are the remaining opportunity for connectivity modernization. For branches in Tier 2 and Tier 3 Indian cities where MPLS infrastructure was limited or expensive, fiber leased line services are often the first opportunity for business-grade dedicated connectivity that was previously economically inaccessible.
What to Do vs. What to Avoid
For enterprises evaluating fiber leased line services for site connectivity: evaluate SD-WAN integration capability alongside the fiber service itself. A fiber leased line without SD-WAN management is a raw connectivity service that requires additional investment in traffic management and application-level quality of service. Fiber leased line services integrated with SD-WAN management platforms provide the application visibility, traffic prioritization, and failover management that enterprise connectivity requires.
What to avoid: migrating sites from MPLS to fiber leased line without confirming that security controls are in place for internet-bound traffic. MPLS networks carry traffic on a private network; fiber leased line services on the public internet require VPN, SASE, or other security overlays to provide equivalent protection for sensitive business data in transit. Security architecture planning should precede or accompany the connectivity migration, not follow it.
What the Next 12 Months Look Like
The next phase of fiber leased line service adoption in India will be driven by the expansion of fiber infrastructure into currently underserved Tier 2 and Tier 3 cities and into the industrial and logistics corridors outside major metropolitan areas. The ‘last mile’ problem that has limited fiber availability in smaller cities is being addressed by government-supported fiber expansion programs and by private sector investment following the demand generated by remote work and manufacturing digitalization. Enterprises that have deferred connectivity modernization pending infrastructure availability in their locations will increasingly find that the infrastructure gap has closed.
