Since 1984 • Murrieta, CA

Windows Software Development & Expert IT Support

Custom .NET / C# applications • Managed IT Services • Cybersecurity • Hardware Support Trusted local technology partner for businesses and homeowners in Murrieta, Temecula, and Riverside County.

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How can we help you?

Whether you need custom software, reliable IT support, or cybersecurity protection, our experienced team is ready to help. Local service in Murrieta & Temecula with nationwide remote capabilities.

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Custom Software Development

Custom Windows/.NET/C# applications built specifically for your business needs. From legacy system modernization to new enterprise solutions, we deliver secure, scalable software that streamlines operations and drives growth.

Managed IT Support

Proactive nationwide remote IT support with local in-person service available in Murrieta and Temecula. We handle your day-to-day technology needs so you can focus on running your business.

Cybersecurity Solutions

Comprehensive protection including firewalls, ransomware defense, email security, employee training, and compliance support. Keep your business safe from evolving cyber threats.

Hardware & Network Support

Computer repair, server setup, networking, and hardware troubleshooting. Local in-person support available in Murrieta and Temecula, plus remote assistance nationwide.

Cloud Solutions & Backup

Secure cloud migration, Microsoft 365 setup, automated backups, and disaster recovery planning. Protect your data and work from anywhere with confidence.

IT Consulting & Training

Technology strategy consulting, software selection guidance, and staff training. We help you make smart IT decisions that maximize productivity and minimize risk.

Our Work

Real results for real businesses. Here are some of the custom software, IT infrastructure, and technology solutions we’ve delivered for clients in Murrieta, Temecula, and across the country.

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Our Customers

Trusted by businesses and organizations throughout Riverside County and beyond.

What Our Clients Say

"SDSI transformed our outdated systems into modern, efficient software. Their team is responsive, knowledgeable, and truly cares about our success. Highly recommended!"
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John Smith
—Owner, Local Manufacturing Company

Meet Our Team

Experienced professionals dedicated to your technology success since 1984.

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Joanne Williams

Founder

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Fred Buster

Director OPS

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Lisa Hoffman​

Director HR

Ready to Start Your Project?

Whether you need custom software, managed IT support, or expert guidance on your technology strategy, our team is ready to help. Contact us today for a free consultation.

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