As IT pros evaluate the role of network-as-a-service, they weigh the upsides of quicker access to new technologies and faster incident-response times against loss of control over security and potential disruptions caused by transitioning away from traditional networking, according to a new Cisco report.\nThese are among the results from Cisco\u2019s survey of 1,534 IT professionals in 13 countries as well as interviews with 20 IT leaders that are compiled in the company\u2019s \u201c2022 Global Networking Trends Report: The Rise of Network as a Service (NaaS)\u201d\nThe 10 most powerful companies in enterprise networking 2021\nIn it, Cisco noted that the industry is still defining what NaaS will look like but pointed to an IDC description of the technology: \u201cNaaS is defined as network infrastructure that organizations consume via a flexible-consumption, operating-expense (OpEx) model that includes hardware, software, management tools, licenses, and lifecycle services, and is managed via a cloud-based platform.\u201d\nNaaS provides continuous access to the latest networking technologies through an on-demand or subscription-based model, Cisco stated.\u00a0Typically, NaaS shifts the burden of day-to-day network management to a third-party provider and allowing enterprise network engineers to spend less time on repetitive network operations and more on making sure policy, performance and security are aligned to business needs, Cisco stated.\nFor enterprises, the as-a-service concept \u00a0began as companies started to embrace cloud computing and its model of consumption-based capacity. IDC predicts that by 2022, 40% of large-enterprise IT budgets will be redistributed due to adoption of as-a-service bundles in areas of security, cloud platforms, virtual workspace, and connectivity. More than 75% of infrastructure in edge locations and up to 50% of data-center infrastructure will be consumed in the as-a-service model by 2024, IDC says.\n\u201cCountless IT organizations are struggling to manage network complexity, respond to disruptions, protect users and data, and keep up with the accelerating pace of business,\u201d Cisco stated. \u201cTo confront these challenges, many are investigating new networking models such as NaaS.\u201d\nPotential NaaS downsides\nWhile the use of NaaS is in its very early days, there are concerns about it, Cisco\u2019s report found. For example, 28% of respondents said the cost and disruption associated with changing their existing infrastructure and operations were NaaS inhibitors, Cisco wrote.\n\u201cUnderstandably, organizations have a multitude of technologies and investments, many of which fall on different depreciation schedules. Other organizations have legacy technologies and applications that may not be a good fit for NaaS. And some simply don\u2019t want to offload the day-to-day management of their infrastructure,\u201d the report stated.\u00a0\nWhile IT leaders share a broad set of concerns, a perceived loss of control is chief among them, specifically control over security (26%) and performance (20%). Thirty percent of respondents questioned whether they will be able to meet future demands if they adopt NaaS, Cisco stated.\n\u201cIn actuality, NaaS is designed for greater on-demand scalability and faster support for the latest technologies. And security, performance, and other important control decisions still lie with the IT team,\u201d Cisco wrote. The company has embarked on a journey to build a NaaS portfolio.\nIn the report Cisco said that IT leaders\u2019 perspectives on NaaS seemed to reflect their overarching networking philosophies, primarily divided into two camps: \u201ccontrol IT\u201d and \u201clean IT.\u201d The ones with the former have not only a highly skilled staff, but also a strong belief that their teams should own and fully control the networking stack, Cisco stated.\nConversely, the lean-IT group seek to consolidate their IT, reassess routine versus value-added tasks, and find ways to offload infrastructure maintenance. Not surprisingly, the organizations with a lean IT mindset that have already shifted some of their IT resources to the cloud are very open to NaaS solutions, Cisco wrote.\nEasing NaaS concerns\nAccording to the report, 49% of IT leaders and 57% of network practitioners said the best timing and circumstance for adopting NaaS is while they are upgrading or refreshing their network infrastructure and are considering new technologies including 100 Gigabit Ethernet, Wi-Fi 6, 5G, SD-WAN and SASE.\n\u201cThirty-four percent of respondents said adapting an existing (brownfield) site where networking technology is already deployed is the ideal scenario for NaaS adoption. Interestingly, only 26% said a greenfield site would be the best fit for NaaS adoption. And only 23% said a phased approach, where domains are upgraded one by one with NaaS, would be the best scenario for their organization,\u201d the report said.\nExperts say before buying into NaaS, enterprises should determine how easy it is to customize the offering to their individual needs and how easy or difficult it is to adapt the services as their needs change.\nOther findings in the Cisco report:\n\nTechnology continues to evolve faster than organizations can adopt it. Thirty-five percent of respondents recognize the requirement to continually deploy the latest networking technologies such as Wi-Fi 6, SD-WAN, secure access service edge (SASE), 5G, AI, and others as their top driver for NaaS.\nWhen considering the technical attributes of NaaS providers and solutions, respondents prioritized a global cloud footprint for reliability, performance, and regional compliance (31%), as well as ML and AI capabilities that enable continuous optimization of the NaaS service (30%). APIs, automation, integrated security, network visibility, and network flexibility also rated highly.\nMulticloud access was identified as the top priority (40%) for NaaS. By offering SD-WAN services, NaaS vendors can provide a consistent and optimized way to connect to a wide variety of cloud-based (IaaS and SaaS) applications.\nThirty-four percent prioritized security-focused NaaS offerings, including VPN, security information and event management (SIEM), secure web gateway, firewalls, and intrusion prevention and detection services (IPS\/IDS). These can help protect users, devices, and applications consistently across multiple clouds and computing environments.\nForty-one percent said it is important for a NaaS provider to offer a consistent NaaS platform across network domains--access, WAN, data center, cloud. With many IT teams facing multiple environments, tool sets, and operating models, NaaS could consolidate network resources, policies, and operations.\nResponding to disruptions (45%) and accommodating new business needs (40%) are cited as the top network challenges for 2021. At the same time, IT teams recognize the top NaaS benefit as freeing up IT teams to deliver innovation and business value (46%). Another 40% recognize NaaS as improving response to disruptions and 34% as improving network agility.