# Top 35 managed service providers in Washington State

Tamtam tracks 35 managed service providers headquartered in Washington State. This list ranks all of them by number of employees on LinkedIn, led by Amazon, Microsoft and Amazon Web Services (AWS). Their median headcount is 315. Half of them were founded in 2006 or later. The most common headquarters are Bellevue (11), Seattle (8) and Redmond (4).

These managed service providers in Washington State are primarily large technology groups and mid-sized firms. The list includes Amazon, an e-commerce giant, and Microsoft, which develops software and cloud services. Also present are Amazon Web Services (AWS), a global cloud computing provider, and Veeam Software, which offers data backup and recovery solutions. F5 provides multi-cloud application services and security, while Beyondsoft is a business IT and consulting company.

The data shows a concentration of companies in the Seattle metropolitan area, with many headquartered in Seattle itself, Bellevue, or Redmond. The dominant sectors are IT services and software development, indicating a strong technology hub.

🇺🇸 Washington State · 35 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Amazon](https://www.tamtam.ai/c/amazon) (amazon.com)<br>An e-commerce giant offering a vast selection of products, convenient shopping experiences, and fast delivery, connecting buyers with a wide range of sellers | Software Development | 🇺🇸 Seattle | 1,541,000 |  |
| 2 | [Microsoft](https://www.tamtam.ai/c/microsoft) (microsoft.com)<br>Develops and sells software, hardware, and cloud services, including the Windows operating system and Office suite, to improve productivity and digital experiences | Software Development | 🇺🇸 Redmond | 233,562 |  |
| 3 | [Amazon Web Services (AWS)](https://www.tamtam.ai/c/amazon-web-services-aws) (amazon.com)<br>A global cloud computing provider offering scalable, reliable, and cost-effective infrastructure services to businesses worldwide, eliminating the need for capital infrastructure expenses | IT Services and IT Consulting | 🇺🇸 Seattle | 147,090 | 2006 |
| 4 | [Veeam Software](https://www.tamtam.ai/c/veeam-software) (veeam.com)<br>Provides data backup, recovery, security, and intelligence solutions ensuring business continuity and data availability across hybrid cloud environments worldwide. | Software Development | 🇺🇸 Seattle | 7,308 | 2006 |
| 5 | [F5](https://www.tamtam.ai/c/f5) (f5.com)<br>It provides multi-cloud application services and security, optimizing and securing apps and APIs for organizations to enhance digital experiences. | IT Services and IT Consulting | 🇺🇸 Seattle | 6,192 |  |
| 6 | [Beyondsoft](https://www.tamtam.ai/c/beyondsoft) (beyondsoft.com)<br>A leading business IT and consulting company leveraging emerging technologies to deliver tailored solutions globally with a talented team | IT Services and IT Consulting | 🇺🇸 Bellevue | 3,483 |  |
| 7 | [Zones, LLC](https://www.tamtam.ai/c/zones-llc) (zones.com)<br>Global IT solution provider with expertise in digital workplace, cloud services, networking, security, and staffing solutions Operating in 120+ countries with top certifications | IT Services and IT Consulting | 🇺🇸 Auburn | 3,134 | 1986 |
| 8 | [Integra](https://www.tamtam.ai/c/integra-vancouver) (allstream.com)<br>A leader in business communications offering voice, collaboration, connectivity, and managed IT services to help customers innovate and reach business goals | Telecommunications | 🇺🇸 Vancouver | 2,709 | 1846 |
| 9 | [iLink Digital](https://www.tamtam.ai/c/ilink-digital) (ilink-digital.com)<br>Helps enterprises move from AI ambition to AI reality with data foundations, security posture, cloud infrastructure, and intelligent applications. | IT Services and IT Consulting | 🇺🇸 Bothell | 1,789 | 2002 |
| 10 | [Aditi Consulting](https://www.tamtam.ai/c/aditi-consulting) (aditiconsulting.com)<br>A consultancy that connects talent, teams, and technology solutions to accelerate clients' digital journey through unique experiences and customized solutions | IT Services and IT Consulting | 🇺🇸 Bellevue | 1,236 | 1994 |
| 11 | [Tegria](https://www.tamtam.ai/c/tegria) (tegria.com)<br>Tegria offers consulting and technology solutions for healthcare organizations to enhance technology, operations, finances, and care quality Learn more at wwwtegriacom | IT Services and IT Consulting | 🇺🇸 Spokane | 1,167 | 2020 |
| 12 | [AWS Elemental](https://www.tamtam.ai/c/aws-elemental) (aws.amazon.com)<br>This company simplifies cloud-based media workflow for content creators, producers, and broadcasters, making it easier to select tools and achieve faster results | Software Development | 🇺🇸 Seattle | 845 | 2006 |
| 13 | [Amazon.com, Inc.](https://www.tamtam.ai/c/amazon-com-inc) (amazon.com)<br>A Seattle-based company founded by Jeff Bezos, known for e-commerce, cloud computing through AWS, generative AI with Bedrock platform, and Prime Video streaming service | Software Development | 🇺🇸 Seattle | 657 |  |
| 14 | [Confiz](https://www.tamtam.ai/c/confiz) (confiz.com)<br>A global provider of technology solutions and consulting services, helping Fortune 500 companies in various industries improve their digital infrastructure through innovative technology solutions | IT Services and IT Consulting | 🇺🇸 Bellevue | 656 | 2005 |
| 15 | [Temporal Technologies](https://www.tamtam.ai/c/temporal-technologies) (temporal.io)<br>Develops and distributes an open source durable execution system that makes code fault tolerant, reliable, and easy to maintain. | Software Development | 🇺🇸 Bellevue | 542 | 2019 |
| 16 | [SmarTek21](https://www.tamtam.ai/c/smartek21) (smartek21.com)<br>A pioneer in using Generative AI for data ecosystems and conversational interfaces, blending human expertise with cutting-edge technology since 2006 | IT Services and IT Consulting | 🇺🇸 Kirkland | 395 | 2006 |
| 17 | [Identity Digital Inc.](https://www.tamtam.ai/c/identity-digital-inc) (identity.digital)<br>Identity Digital simplifies online connections by managing the world's largest portfolio of domains They provide innovative services for building digital identities | Software Development | 🇺🇸 Bellevue | 319 |  |
| 18 | [Continuant](https://www.tamtam.ai/c/continuant) (continuant.com)<br>A seasoned provider of enterprise communications solutions, specializing in PBX support, voice-to-cloud migrations, audio/video, meeting room management, contact centers, networking, and security | Telecommunications | 🇺🇸 Tacoma | 315 | 1996 |
| 19 | [Kelley Create](https://www.tamtam.ai/c/kelley-create) (kelleycreate.com)<br>Business solutions provider since 1974, offering customized technology solutions to simplify operations and drive success for companies in the Western United States | Technology, Information and Internet | 🇺🇸 Kent | 313 | 1974 |
| 20 | [CommandLink](https://www.tamtam.ai/c/commandlink) (commandlink.com)<br>Provides a unified global infrastructure platform combining connectivity, security, voice, and AI with extensive carrier aggregation and dedicated support for enterprise IT. | Software Development | 🇺🇸 Bothell | 299 | 2012 |
| 21 | [Aptly Technology Corporation](https://www.tamtam.ai/c/aptly-technology-corporation) (aptlytech.com)<br>Professional IT outsourcing and consulting services company based in Seattle Specializing in cloud infrastructure, application development, data engineering, AI solutions, contingent staffing, and business operations | IT Services and IT Consulting | 🇺🇸 Bellevue | 292 | 2016 |
| 22 | [Techno Brain GBS](https://www.tamtam.ai/c/techno-brain-gbs) (technobraingroup.com)<br>A leading BPO/ITES provider in Africa offering tailored, affordable, and quality solutions in call center management, back-office services, and digital media services globally | IT Services and IT Consulting | 🇺🇸 Seattle | 284 | 2006 |
| 23 | [CSI Interfusion](https://www.tamtam.ai/c/csi-interfusion) (csi-interfusion.com)<br>Global IT firm specializing in Microsoft technologies, providing cloud services, digital solutions, and business processing with over 60,000 professionals worldwide | IT Services and IT Consulting | 🇺🇸 Bellevue | 260 | 2006 |
| 24 | [OpsWerks](https://www.tamtam.ai/c/opswerks) (opswerks.com)<br>OpsWerks specializes in creating tailored solutions for data center and cloud operations to make technology work for their customers' exact needs | IT Services and IT Consulting | 🇺🇸 Bellevue | 249 | 2015 |
| 25 | [Redapt, Inc.](https://www.tamtam.ai/c/redapt-inc) (redapt.com)<br>A technology solutions provider specializing in datacenter infrastructure, cloud implementations, and navigating technical challenges to accelerate business growth | IT Services and IT Consulting | 🇺🇸 Woodinville | 199 | 1996 |
| 26 | [Wowrack](https://www.tamtam.ai/c/wowrack) (wowrack.com)<br>A premier cloud service provider offering Managed Hosting, Dedicated Servers, Colocation, Virtualization, Bandwidth Delivery, and Managed Services to global companies | IT Services and IT Consulting | 🇺🇸 Seattle | 195 | 2001 |
| 27 | [Inspur USA](https://www.tamtam.ai/c/inspur-usa) (inspur.com)<br>A leading global provider of datacenter and cloud computing solutions with a strong presence in the US market | IT Services and IT Consulting | 🇺🇸 Bellevue | 33 |  |
| 28 | [9Logic Technologies Inc](https://www.tamtam.ai/c/9logic-technologies-inc) (9logic.com)<br>Global IT consulting firm offering expertise in cloud computing, IoT, and app development services to help businesses harness the benefits of technology securely and efficiently | IT Services and IT Consulting | 🇺🇸 Redmond | 33 | 2013 |
| 29 | [Virtuosity Consulting Group - An InterVision Company](https://www.tamtam.ai/c/virtuosity-consulting-group-an-intervision-company) (intervision.com)<br>A technology services company focused on executing, automating, and managing critical business and technology initiatives, with a strong emphasis on innovation and teamwork | IT Services and IT Consulting | 🇺🇸 Bellevue | 31 | 2008 |
| 30 | [MXI](https://www.tamtam.ai/c/mxi) (mxitech.io)<br>An international management consultancy specializing in technology to optimize business performance, serving firms of all sizes globally with a user-friendly methodology | IT Services and IT Consulting | 🇺🇸 Bellevue | 24 | 2003 |
| 31 | [InTWO Seattle](https://www.tamtam.ai/c/intwo-seattle) (intwo.cloud)<br>A world-leading provider of cloud technology services, helping businesses transform with integrated cloud, collaboration, and application solutions for competitive advantage | IT Services and IT Consulting | 🇺🇸 Redmond | 9 | 1989 |
| 32 | [Intrinium](https://www.tamtam.ai/c/intrinium) (torchlight.io)<br>An IT and Security Solutions company offering consulting, managed services, and transformative solutions to businesses, ensuring secure and efficient operations | IT Services and IT Consulting | 🇺🇸 Spokane Valley | 7 | 2007 |
| 33 | [Locke Systems Inc](https://www.tamtam.ai/c/locke-systems-inc) (lockesystems.com)<br>Provider of comprehensive IT services and consulting for businesses, specializing in managing technology infrastructure and supporting everyday operations | IT Services and IT Consulting | 🇺🇸 Tacoma | 7 | 2003 |
| 34 | [JCMar](https://www.tamtam.ai/c/jcmar) (jcmar.com)<br>Providing business solutions in application development, web/mobile services, and cloud management to both private and public sectors, advancing technology through research and development | IT Services and IT Consulting | 🇺🇸 Snohomish | 2 | 2013 |
| 35 | [DeSeMa](https://www.tamtam.ai/c/desema) (desema.com)<br>Industry-leading IT services provider with decades of experience creating advanced systems, optimizing and securing IT environments through expertise and advanced certifications | IT Services and IT Consulting | 🇺🇸 Redmond | 2 | 2010 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

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Source: https://www.tamtam.ai/l/managed-service-providers-washington-state