Offered by – large vendors or service providers that can financially support a high-quality and globally distributed backbone.The single vendor architecture reduces the competitiveness in the market as fewer companies can offer it and fewer enterprises can afford it: This introduces business challenges due to the increased cost of network operations, and user experience challenges that vary based on the quality and geolocation of the backbone of each vendor. Given the strict and monolithic routing architecture defined in SASE, a Zoom call or consumption of a YouTube video clip will be mandatorily routed over the backbone of the SASE vendor (remember, the vendor now is practically a service provider) and through its security. This move gave a name to the existing services offered by several security companies such as Zscaler. SSE offers less monolithic one size fits all architecturesĪs the market voted with its feet and budget decisions for variations of SASE, in 2021 Gartner coined a new term, SSE (Security Service Edge) which in essence is a cloud-delivered security service offered as a unified platform. Moreover, vendors offered a variety of combinations of the elements of SASE (more on what they are, below). The market reality proved to be different, enterprises and service providers were deploying a variety of architectures and variations of the theoretical SASE recommendation. The hype around SASE was so strong that one company came out with a marketing campaign that said, “SD-WAN is Dead, Long Live SASE” (you will not find it in their marketing messaging anymore). The hype around SASE quickly placed it at the peak of inflated expectations on the Gartner Hype Cycle for Enterprise Networking in 2020. These together, combined with the desire to innovate and differentiate from competing analyst firms, drove Gartner to coin the term SASE in 2019. Companies that offered the single and monolithic option of the SASE architecture (prior to coining the term SASE) with strong financial backing and marketing capabilities that created the hype around the concept.The increasing demand for the consumption of cloud applications which required securing the access to them and ensuring quality of experience.The integration between networking (SD-WAN) and security – At first, mainly as an on-premise solution, either as one unified product or through the concept of VNFs and uCPE and later it shifted to integrations between SD-WAN products and cloud security services.The advancement of Zero Trust, a concept that was developed long before this time and in 2010 used by Forrester Research as a model for stricter enterprise security.Availability and popularity of security services in the cloud.The separation between the control and the data planesĪ few key factors led to the coining of the term SASE (Secure Access Service Edge):.The ability to utilize general purpose broadband and wireless connections while optimizing the traffic flow over them.Increased processing power that made it possible to create application-aware software-based networking solutions.The shift of applications to the cloud and the need to deliver them securely and in high-quality of experience.The main factors that made it successful include: SD-WAN stems from several technology advancements and changes in the design of enterprise networks. The term SD-WAN (Software Defined WAN) came along around 2014 making use of several existing technologies and putting them under one umbrella. MPLS (Multiprotocol Label Switching) was invented back in the 90s and is still around today but the WANs (Wide Area Network) it serves and how applications are consumed has completely changed.
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