RISQ - Colloque 2018 8h45 Jonathan Forest

1. 0 © 2016 Gartner, Inc. and/or its affiliates. All rights reserved.
Why SD-WAN as it Moves
to Mainstream Adoption?
Jonathan Forest
Senior Director Analyst
11/29/18

2. 1 © 2016 Gartner, Inc. and/or its affiliates. All rights reserved.
The New Digital World
1bn+
users per
application
(Source: Google)
$1tn
Apple first
trillion dollar
business
(August 2, 2018)
46%
customer
value from
digital by
2020
(Source: Gartner)
24,000
servers per
administrator
(Source: Facebook)
13
of the top 32
firms are platform
companies
(Source: Marshall
Van Alstyne)
7.4bn
mobile
devices by
2020
(Source: Gartner)
26bn
connected
things by
2020
(Source: Gartner) 69,000
YouTubes per
second
(Source:
internetlivestats.com)

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Digital business
innovates at
the speed of
software,
but networking
has innovated
at the speed
of hardware.

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Agenda
 State of the Enterprise WAN and Drivers for Change
 SD-WAN (Current/Future)
 Recommendations

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Current State of the Enterprise WAN
 Migration to the cloud (XaaS)
 Business wants more, faster
and inexpensive
 More responsibilities with
less control (e.g., shadow IT)
 Classic responsibilities remain
 New ways of working and
new skills required (e.g., automation)
 New technologies, More devices (e.g.,
IoT)
 Legacy, expensive technologies (e.g.,
MPLS)
 Flat budgets

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0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
2016 2018 2020 2022 2024
Enterprise Computing Workloads
On-Premises Off-Premises Cloud Providers
Shrinking Enterprise Data Centers
Source: Gartner (August 2016)

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Network as a Service — Opex Is the New Capex
Variable Payments
Subscribe and Manage
Services in the Cloud
Network on Demand

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State of Software-
Defined WAN (SD-
WAN)

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Gartner’s Definition of SDWAN
Lightweight replacement for traditional
WAN routers.
Dynamically distributes traffic across multiple WAN
connections, and based on application policies.
Transport/Carrier-agnostic.
Dramatically simplifies the complexity associated
with traditional and hybrid WANs.
Secure connectivity with the ability to integrate
additional network services.

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Why should I care…
 Availability and Performance
– Branch Availability: Supports diverse transport and faster/ granular failover than traditional
routers
– App Performance: It helps facilitate heterogenous/hybrid WANs, which can lower latency for
public cloud-based apps
 SDWAN can save you money
– Can shift current/future spend away from MPLS towards lower cost services.
– Lowered OPEX versus traditional routers
– Lowered CAPEX versus traditional routers
 Better visibility
– Improved reporting, application troubleshooting versus traditional routers

11. 10 © 2016 Gartner, Inc. and/or its affiliates. All rights reserved.
SD-WAN by the Numbers
 Currently, 5,000 – 10,000 paying customers, 250K+ branches
 Vendor revenue to grow at 30.2% CAGR thru 2022 to $1.8B
 VMware/Velo, Cisco (multiple), and Silver Peak all with more
than 500 paying customers
 By 2020, more than 75% of WAN edge infrastructure refresh
initiatives will be based on SD-WAN
 Globally, more than 64% plan to use managed SD-WAN
services (but not in NA)

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Where SD-WAN
makes sense
• Aggressively moving apps to the public cloud
• Moving towards a hybrid-WAN topology
• Want diverse transport and/or higher availability
• Have 12+ branch offices
• Have limited IT expertise at branch sites
• Want to reduce WAN complexity
• Supporting enterprise-wide digitization initiatives
• Most branch sites are in areas with reliable
terrestrial based Internet connectivity

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The Dirty Little
Secrets of SD-
WAN
1. It may not save you any money
2. There’s still a lot of hardware involved
• Many vendors lead with hardware appliances
• Prices are going up
3. Many implementations actually add technical debt, leading
to additional complexity
• Many people are not using SDWAN to replace an existing
router (at least not yet) for a variety of reasons
4. Lower-cost transport often leads to challenges managing
heterogeneous connectivity
5. Gaps exist with well-known players (T1/E1, WAN
Optimization, IPv6, ability to support global installed-base)

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Vendor
Landscape
Pure Plays / New Guys
 Ocedo (Riverbed)
 Viptela (Cisco)
 VeloCloud (VMware)
 CloudGenix
 Nuage
 Cato
 Versa
 128T
The VNF Club
 Juniper
 Brocade
 Adtran
Pivoting Vendors
 Silver Peak
 Talari Networks
 Citrix
 Barracuda
 Cybera
 FatPipe
 Riverbed
 Cradlepoint
 InfoVista
 Ecessa
 Aryaka
 Fortinet
 Cisco Meraki
 Viprinet
 Aerohive
Big Incumbents
 Cisco/Juniper
 Huawei
 HPE
 Teldat
 MSPs
 Carriers/SPs
Carrier/MSP-Ish
 Apcela
 Bigleaf Networks
 ZeroOutages
 TELoIP
 SIs
Coming Soon?
 Arista
 Extreme

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SD-WAN: Vendor/Product Differentiators Today
 Cost and licensing model (capex/opex)
 Solution scale
 Adoption/Production Customers
 Availability of managed/DIY
consumption models
 Cloud gateways/POPs
 Security services like firewall/SWG/
UTM
 WAN optimization, FEC, Duplication
 Form-factor(s) and physical interfaces
(e.g., T1/E1/LTE, WiFi and VNF)
 QoS
 Multi-tenancy
 Experience in verticals/GEOs (installed-
base)
 Management platform beyond CPE (Wifi,
Switches)
 Extend policy beyond CPE (DC,
Switches)
 Path selection techniques (granularity
and performance)
 GUI and Mgmt Simplicity/ZTP

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Future of SD-WAN

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Future of the WAN…
Routing
Voice/UC
Firewall/UTM
WAN Opt.
WLAN
LAN Switch
SWGaaS
WOaaS
Cloud Mgmt
FWaaS
UCaaS
SD-WAN
WAN Opt. SD-WAN Firewall
vCPE (x86)
2010 2020Now
WLAN
LAN Sw.

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Finally, 2020 Vision for Your WAN
 Bandwidth on-demand
 Hybrid is the new WAN
 Network functions via software,
not hardware
 Zero-touch configuration will
be the norm
 Powered by NFV, vCPE
and SDWAN

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Recommendations

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Look to SD-WAN if …
 Undergoing WAN device refresh
 Carrier renegotiation for the WAN
 Telephony refresh or UC rollout
 Moving to SaaS/O365
 Rolling video to the WAN
 Heavy WAN pain
(cost/performance/availability)
SD-WAN alone may not be a
fit where there is …
 Small number of very large branches
 Single-homed locations
 Very high latency
 High cloud or risk aversion
 Very recent router/WOC refresh
 A need for lots of resources local to
the branch (x86, voice, etc.) on a
single platform
Our Guidance to End-user Clients

21. 20 © 2016 Gartner, Inc. and/or its affiliates. All rights reserved.
 Magic Quadrant for WAN Edge Infrastructure
 Joe Skorupa, Andrew Lerner, Christian Canales, Mike Toussaint (G00351467)
 Technology Insight for SD-WAN
 Andrew Lerner, Jonathan Forest, Neil Rickard, Ted Corbett (G00369080 )
 Highlighting Gartner’s Must-Have SD-WAN Research
 Jonathan Forest, Andrew Lerner, Lisa Pierce (G00373781)
 Market Guide for Managed SD-WAN Services
 Ted Corbett, Neil Rickard, Katja Ruud, Bjarne Munch, Danellie Young, Gaspar Valdivia, Mike
Toussaint (G00352817)
 6 Questions to Ask on SD-WAN
 Mike Toussaint, Andrew Lerner, Ted Corbett
Recommended Gartner Research