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Large Business IT Services

Enterprise-level IT support with one vendor and one invoice.

Stop vendor confusion with one point of contact backed by 80+ technical certifications.

Control IT costs with all-in managed pricing and no added charge for after hours support.

Reduce recurring issues through proactive monitoring, maintenance, and rapid issue resolution.

Strengthen security with integrated cybersecurity services included at no additional cost.

Start with clarity through onboarding that maps assets, vendors, access, and infrastructure.

Request a Quote for our Large Business IT Services

Trusted by Organizations With Complex IT Needs

See how Outsource Solutions Group supports long-term reliability, planning, and issue resolution.

We completely outsourced our IT department to Outsource Solutions Group, Inc. They handle all the security and critical patching to our infrastructure as well as all help desk support. We also procure all our hardware needs through Outsource. OSG is extremely responsive to our needs, handles tickets with care and timeliness too. We appreciate everything they do for us and would recommend their services to any business looking for an IT provider you can trust

Vice President Of Commercial Operations, Pharmaceutical Company

We started with OSG a few years back when we had issues with our former IT company. They were professional and quick to serve us. Since that day we have loved the relationship that we have with all the staff at OSG. Their customer service is outstanding. I wish we would have switched to them sooner and I would HIGHLY recommend them!

Director of Operations, Fox Valley Non-profit

Outsource IT Group has taken the time to learn our business, serve as a trusted partner, and provide a level of expertise that allows us to effectively allocate human resources to other critical services. In addition to providing us with technical and hardware support, the strategic quarterly meetings have helped us to grow as an institution through the implementation of new technologies and processes. Newly instituted services include increasing internet speed and stability, the pending implementation of RFID, and a successful transition to the Microsoft Phone System for unified communication. We would highly recommend their services to any organization looking for innovation and creativity.

Executive Director, Local Public Library

We’ve had an outstanding experience with Attentus. Brandon P., our NetAdmin, is proactive, attentive, and truly invested in our success. He consistently checks in, anticipates needs, and ensures we’re supported at every level. What really stands out is that Brandon goes the extra mile to troubleshoot issues thoroughly and stays with them until they’re fully resolved. We never feel like tickets are just being closed — he makes sure the solution actually works for our team.
Sean is always friendly, approachable, and completely solution-oriented. He makes even frustrating I.T issues feel manageable and keeps things moving quickly.
Logan has been invaluable when it comes to more complex projects. He approaches challenges thoughtfully, finds clear and effective solutions, and is patient with questions — explaining things in a way that even less tech-savvy folks can understand.
Joel O., our vCIO, has been a steady leader overseeing our biggest challenges and the overall health of our systems.
The team is consistently responsive and helpful, and their customer service truly stands out. Choosing Attentus is one of the best decisions we’ve made — they give us confidence and peace of mind every day.
Highly recommend!

Kacie Washington

Complete IT Support for Larger, More Complex Teams

Proactive management for growing operations

Large organizations need a support model that covers more than user tickets. OSG provides ongoing management across workstations, servers, networks, applications, access, and vendors so your teams can operate with fewer disruptions.

With one point of contact and dedicated technical resources, support requests, upgrades, and planning stay connected instead of scattered across multiple providers.

Predictable IT spending matters when every department depends on stable systems. OSG’s managed services are structured around all-in pricing, helping your business control monthly IT budgets without stacking unexpected support layers.

Managed services clients also receive after hours support and on-site travel time without added charges, giving leadership a clearer way to plan IT costs.

Security cannot sit outside daily IT management. OSG integrates cybersecurity services into managed IT support at no additional cost, helping protect users, endpoints, data, and infrastructure as part of the same operating plan.

Coverage can include MDR and EDR, security monitoring, patching, access control, and guidance on practical risk reduction tied to your business environment.

Strong support begins with accurate documentation. OSG’s onboarding process maps infrastructure, assets, vendors, access, spending, procedures, and long-term priorities so support can begin with context, not assumptions.

This detailed foundation helps reduce delays, uncover risk areas, and create a practical roadmap for upgrades, maintenance, security improvements, and future IT planning.

Large business IT needs direction, not just reaction. OSG supports strategic technology planning through reviews, budgeting discussions, procurement guidance, and a 6 quarter IT strategic road map that keeps priorities visible.

Your leadership team gains a clearer view of upcoming investments, system lifecycle needs, security gaps, and infrastructure improvements before they become urgent problems.

Distributed teams and multiple operating needs require flexible support. OSG provides remote and on-site technical service, field technician coordination, and support for clients with offices across North America.

That structure helps your users get practical help where work happens, while your organization keeps support standards, documentation, and accountability under one managed IT relationship.

Our Partners

Proven IT Experience for Demanding Business Environments

80+

Technical Certifications

108.25

Support Tickets Resolved Daily

23+ Yr

Experience

Streamlined IT solutions for large businesses, showcasing effective management of complex systems and services.

Simplify Complex IT Across Your Organization

Large business IT requires more than ticket handling. You need infrastructure support, cybersecurity, vendor coordination, user support, and strategic planning working from the same playbook.

Outsource Solutions Group helps simplify that environment with one accountable IT partner, all-in managed pricing, and a team built to support hardware, software, data, process, people, and strategy.

Large Business IT Services IT Support Built Around Daily Business Needs section image 2

IT Support Built Around Daily Business Needs

Designed for operational continuity:

  • Proactive monitoring and maintenance
  • Security and infrastructure upgrades
  • Helpdesk and technical support
  • IT budget planning and reviews
  • Vendor and asset documentation

Plan Smarter IT Support for Your Business

Get clearer budgets, stronger support, and fewer recurring IT issues.

Request More Information
Visual representation of a comprehensive IT environment for Large Business IT Services, showcasing network and system integra

Start With a Clear View of Your IT Environment

Confidence starts with knowing what is in place. OSG uses a comprehensive onboarding process to document systems, access, vendors, assets, spending, and long-term priorities from the start.

That foundation helps your business avoid recurring IT issues, plan upgrades with less guesswork, and keep support aligned with how your teams actually work.

Frequently Asked Questions

You receive comprehensive IT support that spans hardware, software, data, processes, people, and strategy. This includes proactive monitoring, user support, infrastructure upgrades, cybersecurity, vendor management, and ongoing IT planning. Every aspect of your IT environment is managed under one all-inclusive agreement, so there is no need to juggle multiple providers or contracts.

Large business IT services use proactive monitoring and regular maintenance to identify and resolve problems before they disrupt your operations. With rapid issue resolution and continuous oversight, you experience fewer recurring incidents and less downtime. This approach helps keep your systems reliable and your teams focused on business goals rather than IT headaches.

Onboarding begins with a detailed assessment of your current IT environment, including asset mapping, vendor lists, access controls, and network documentation. Every system and process is documented to ensure a seamless transition and immediate support coverage. This thorough approach sets the stage for tailored IT management and fewer surprises down the line.

You benefit from all-in managed IT pricing that covers every aspect of support, including after hours assistance and cybersecurity services at no additional charge. There are no extra fees for on-site visits or travel time, allowing you to budget with confidence. The single monthly invoice makes it easy to control costs and eliminates surprise charges.

Your organization gains a single point of contact backed by a team with over 80 technical certifications and a proven track record in diverse industries. The all-inclusive model means no gaps in coverage, no hidden fees, and integrated security built in. You also have the reassurance of a 100% money-back guarantee and a 90-day opt-out clause, so your satisfaction and IT performance are always prioritized.

Contact Us

1730 Park St STE 225,
Naperville, IL 60563, United States

1016 W Jackson Blvd PMB #444,
Chicago, IL 60607, United States
205 Michigan Ave Suite 810,
Chicago, IL 60601, United States

Sales

(855) 288-0344

Customer Support

(630) 236-6625

IT Services in Chicago

IT Services in Naperville

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630-428-0524

After-Hours Support

(331) 452-3553

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