Call 262-292-2000

Southern Wisconsin · Phoenix · San Antonio-Austin

The kind of IT partner you only have to choose once.

Family-owned since 1991, TSR builds long term relationships with businesses that are tired of starting over with a new provider every few years. Consistent people, honest pricing, and decisions made for clients, not investors.

3.5 min
Average to a live technician
Live
Answered service line
24/7/365
Monitoring
1991
Family owned & operated
U.S.-based
Team

Find the right level of IT support

Start with the resources you have today. After a consult we will map responsibilities and coverage, and recommend a package fit for you.

For Businesses Without Internal IT Resources

Full Managed Guardian

Give your people a single place to turn for help and put everyday IT operations in TSR’s hands.

  • Help desk, monitoring, and patching
  • Security and backup coordination
  • Technology planning and lifecycle management
Explore fully managed IT support

For Businesses With Internal IT Resources

Co-Managed Guardian

Keep your IT team. We fill in the gaps providing security, after-hours, servers, network, and SOC services.

  • Security and SOC behind your team
  • After-hours coverage
  • Servers and network
Explore co-managed IT support

What clients say

  • “TSR's approach has been one of a true consultant. Rather than coming in and trying to change everything to match TSR's perception of what is best, they came in and learned our business environment to work together and ensure that the process would work well for everyone involved. They have a strong team of technicians backing everything who respond quickly and know our systems well. If you have not talked to TSR yet, I would recommend that you do.”

    Richard Pearson, CEO / Co-Founder, Evergreen Pharmacy
  • “Partnering with TSR Solutions has been an absolute pleasure. Their entire team is incredibly easy to work with: competent, personable, and always willing to go the extra mile. Despite being a smaller business, we never feel overlooked or de-prioritized, and that means a lot to us. TSR consistently provides forward-thinking recommendations to keep us up-to-date, and their proactive communication makes everything seamless. They genuinely care about our company's success as if it were their own, and that level of dedication is rare and appreciated.”

    Heather Schmitz, Office Manager, Associated Claims, Inc.

From Google

Michael S.

“TSR manages all my business's IT, cloud services, and handles cybersecurity. They are always responsive, proactive, and easy to work with. They've got my back and I highly recommend working with them!”

Google review

Kim S

“TSR has been our IT provider for many years, they have been top notch, the team knows all you need to know.”

Google review

Bobby S.

“These folks at TSR "GSD" - If you know, you know. Jackson is consistently positive, quick, and efficient. Most IT professionals don't have personalities, but TSR certainly breaks that mold.”

Google review

Beth R.

“Great company to work with. Their employees are knowledgable and top notch at customer service!”

Google review

Eva D.

“Whenever I contact TSR for assistance (which is more frequently than I'd like to admit), their help is prompt, accurate, and courteous. They explain the source of the problem and the steps to correct it, as well as how to avoid it in the future.”

Google review

Travis M

“We’ve had a great experience working with TSR Solutions as our managed IT service provider. Their team is responsive, knowledgeable, and proactive in identifying and resolving issues before they impact our business. A special thank you to our account manager, Jackson Xiong, who has been exceptional to work with. Jackson is attentive, strategic, and always quick to respond. He makes sure our needs are addressed and that we’re set up for long-term success. TSR Solutions has truly become a trusted partner in keeping our systems secure and running smoothly. Highly recommend.”

Google review

Maureen W.

“This team is extremely knowledgeable and responsive--I always get great help and they are always pleasant and professional!”

Google review

Susan M.

“I have had such great experiences with TSR. Their staff are top-notch, always helpful, proactive, and patient. I highly recommend them!”

Google review

Jon L.

“TSR Solutions has been our IT support system for a number of years. Their knowledgeable staff, fast response time, and 24 hour service is above the rest!”

Google review

Ahnna H.

“TSR is very helpful and they get to the root cause effectively!! They are top of things and respond to issues timely! I am happy they are our IT company to resolve our IT issues.”

Google review

Julie L.

“Excellent response time. Accurate and professional. So easy to work with!”

Google review

More published testimonials on Hear From Our Customers.

Managed IT services where we work: Wisconsin, Phoenix, San Antonio, and Austin

One company across three markets. The same standards in Southern Wisconsin, the Phoenix metro, and San Antonio-Austin.

Southern Wisconsin

Headquarters in Cedarburg. Coverage across Milwaukee metro, Southeast Wisconsin, and Madison, with the same response standards you see on every TSR page.

Glendale, Mequon, Shorewood, Waukesha corridor, and nearby communities are served through these hubs.

Explore Wisconsin locations

Phoenix metro

Arizona coverage for Phoenix and nearby communities. Our Phoenix team with national-style help desk standards, not a thin city-name page.

Scottsdale, Tempe, Mesa, Gilbert, Peoria, Surprise, Avondale, and nearby communities are covered from the Phoenix hub.

Explore Phoenix IT support

San Antonio and Austin

Texas coverage for San Antonio, Austin, and nearby communities. Dual-metro presence with clear paths into each hub.

Round Rock, New Braunfels, and nearby communities are covered from the San Antonio and Austin hubs.

Explore Texas locations

Family owned & operated

Started by a father. Grown by a family.

Tim Radtke founded TSR in 1991, and his brothers Paul and Mike joined early to help build it. All three are still part of the business today, and now Tim's sons, Tommy and Johnny, are leading TSR into its next chapter.

From our headquarters in Cedarburg, Wisconsin, we have grown to serve clients in San Antonio, Austin, and Phoenix, with the same idea that started it all: Technology on Purpose.

Read our story
Tim Radtke (center) with brothers Paul (left) and Mike, who helped build TSR.

Support for the technology your business depends on

From everyday support to your next cloud move, connect your IT decisions to the work your people need to do.

Cybersecurity

Protect accounts, devices, and business data with clear responsibilities for prevention and response.

Explore Cybersecurity

Cloud

Plan, migrate, and manage Microsoft 365, Azure, and hybrid environments around how your team works.

Explore Cloud

Explore everything TSR can help with: View all services.

Printed mockup of the TSR Solutions IT buyer’s guide report.

Free report

What Every Business Owner Must Know About IT Support Services and Fees

Request the report

Frequently asked questions

What is the difference between fully managed and co-managed IT?

Fully managed IT means TSR owns the complete day-to-day IT, including the help desk, cybersecurity, and proactive planning. Co-Managed Guardian means you keep your IT team; we fill the gaps in security, after-hours, servers, network, and SOC. Use the pricing tool on Managed IT for an estimated monthly cost, or book a free consult to learn more.

How fast do you respond?

3.5 minutes average to a live technician. Our U.S.-based team monitors systems 24/7/365.

What size companies do you work with?

We are built for small to mid market businesses ranging from small to mid market organizations. We commonly work in Manufacturing, Healthcare, Legal, Professional Services, and Non-Profit. Book a free consult and we will tell you honestly if we are a fit.

Do you only serve Wisconsin?

No. We serve Southern Wisconsin, the Phoenix metro, and San Antonio-Austin, with the same standards across markets.

Which industries do you focus on?

We work primarily in these five industries: Manufacturing, Healthcare, Legal, Professional Services, and Non-Profit.

Where can I see packages and pricing?

The Managed IT page has a monthly estimator for Guardian and Co-Managed Guardian. Explore Services for cybersecurity, cloud, and consulting. If you are unsure which level of support fits, book a free consult to talk through your needs.

Next step

Let us talk about what your IT needs next