Managed IT, cybersecurity, and compliance support for businesses that can't afford downtime. We handle the technology so your team can focus on the work.
A Managed Service Provider (MSP) takes over the day-to-day management of your IT — monitoring, maintenance, help desk, and strategic planning — under a predictable monthly agreement. No surprise bills. No reactive scrambles.
A Managed Security Service Provider (MSSP) goes further, adding 24/7 threat detection, endpoint security, SIEM monitoring, and compliance-aware monitoring. If you handle sensitive data or work in a regulated industry, that security layer isn't optional.
Crestline Technologies delivers both MSP and MSSP services through our CrestOne plans — built for Knoxville and East Tennessee businesses who need a real IT partner, not just a help desk number.
Schedule a Free IT Risk Review →From slow PCs to ransomware threats — we resolve the issue, explain the root cause, and put monitoring in place so it doesn't come back.
We identify the real culprit — hardware, bloat, or misconfiguration — and get machines running the way they should, without the guesswork.
Learn More →We stabilize connectivity, tune your network infrastructure, and make remote work predictable — not a daily frustration.
Learn More →Login loops, missing mail, spam floods, compromised accounts — fixed, properly secured, and documented so it doesn't recur.
Learn More →Our MSSP services harden your endpoints, enforce MFA, and monitor 24/7 so threats are caught and contained before damage is done.
Learn More →We verify your backups, run real restore tests, and ensure you can recover quickly when it matters — no surprises, no data loss.
Learn More →Tell us what's slowing your team down. We'll point you to the fastest fix and the right long-term plan.
Schedule a Free IT Risk Review →Fragmented phone systems, missed calls, and disconnected teams cost you productivity every day. Unified Communications (UC) brings your voice, video, messaging, and collaboration tools into a single cloud-managed platform — fully integrated with your IT environment.
Crestline Technologies designs, deploys, and manages UC solutions built for East Tennessee businesses — from cloud VoIP phone systems to enterprise video conferencing and team collaboration tools. Whether you're replacing an aging PBX or building out a fully remote workforce, we make the transition seamless.
Replace aging PBX hardware with a fully managed cloud phone system. Feature-rich, scalable, and integrated with your workflows.
Microsoft Teams, Zoom, and enterprise video conferencing — deployed, secured, and optimized for your team's daily workflow.
Unified messaging across desktop, mobile, and web — with presence indicators so your team stays connected wherever they work.
Business-grade cloud phone systems with auto-attendant, call routing, and voicemail-to-email.
Microsoft Teams & Zoom deployment, management, and ongoing support for distributed teams.
Unified chat, file sharing, and presence across desktop and mobile — all secured and managed.
Ongoing administration, user provisioning, and helpdesk support for your entire communications stack.
All UC solutions are deployed with security controls, encryption, and compliance requirements built in — critical for healthcare, finance, and legal industries.
Choose the level of support, security, and proactive management your organization needs. We scope each CrestOne plan around your users, devices, compliance requirements, risk profile, and business goals.
All CrestOne plans are scoped around your environment. Schedule a Free IT Risk Review to find the right CrestOne plan.
These services complement any CrestOne plan — or stand alone for targeted projects.
Penetration testing, security gap assessments, phishing simulations, and policy development for regulated industries in East Tennessee.
Microsoft Azure, Microsoft 365, and hybrid cloud infrastructure design, migration, and ongoing optimization for Knoxville businesses.
CMMC, HIPAA, PCI DSS gap assessments, documentation, remediation, and audit-ready reporting for regulated East Tennessee businesses.
Server migrations, hardware deployments, network refreshes, and new office build-outs — fixed scope, clear timeline, no surprises.
Different industries carry different compliance obligations, security risks, and operational demands. We address each one directly.
Healthcare organizations in Knoxville and East Tennessee face strict HIPAA requirements and can't afford downtime. We provide IT operations built around compliance, security, and reliability so your staff can focus on patients — not passwords.
Financial firms need airtight security and audit-ready environments. We help you meet PCI DSS and GLBA requirements while keeping systems fast, reliable, and properly documented for East Tennessee financial institutions.
Construction companies need reliable connectivity between job sites and the back office. We make project management tools, file sharing, and communications work wherever your team is across East Tennessee.
Manufacturing operations require technology that supports production while keeping security tight. We keep systems running, data segmented, and production floors protected across East Tennessee.
Law firms in Knoxville and East Tennessee handle sensitive client data every day. We provide secure, reliable IT that supports attorney-client privilege and keeps your practice management systems running without disruption.
Schools and educational institutions across East Tennessee need dependable technology for staff and students alike. We manage devices, protect student data, and keep learning platforms running without interruption.
No bloated onboarding before we start helping. We're useful from the very first call.
We ask the right questions, review your environment, and identify the likely root cause — fast, without wasting your time.
We fix the immediate problem and confirm everything is stable before moving on.
No jargon. You'll know exactly what caused it, what's at risk if it repeats, and what we did to fix it.
We implement proactive monitoring, hardening, and process changes that break the cycle of recurring IT problems.
We're Knoxville-based, accountable, and invested in outcomes — not ticket counts. Here's what that looks like in practice.
Knoxville-based. You get a real person who owns the outcome — not a rotating help desk agent reading from a script.
We fix root cause, document it, and put monitoring in place so the same problem doesn't come back and disrupt your team again.
MSSP-grade monitoring and hardening is part of every engagement — not an upsell you have to ask for separately.
You'll always know what happened, why it happened, and exactly what we're doing about it — plain language, no runaround.
Crestline is built around accountable local support, security-minded operations, and technician readiness from day one. We do not treat IT support as simple troubleshooting. Our approach is to train technicians to understand the systems they are touching, the risks behind each change, and the security expectations businesses face when handling sensitive data.
Our internal training is designed around recognized industry certifications and standards, including CompTIA, Microsoft, Cisco, and other respected technical certification paths. This helps ensure our technicians are prepared to support users responsibly, follow proper processes, and understand the operational impact of their work before making changes.
For businesses with sensitive systems, compliance concerns, or more advanced IT requirements, that matters. Crestline takes the time to make sure support is not just fast, but informed, careful, and security-aware.
"I highly recommend Crestline Technologies for impeccable customer service and being Johnny-on-the-spot. James and his team are always there when we need them. If I know of anyone looking for IT services, I would definitely recommend them without hesitation."
"Working with Crestline Technologies has been a great experience. They are easy to work with, responsive, and proactive in making sure everything runs smoothly. James is personable and professional, and we've been very happy with the results."
Crestline Technologies is headquartered in Knoxville, TN and provides managed IT, MSSP cybersecurity, Microsoft 365, VoIP, backup, and compliance-focused support to businesses throughout East Tennessee.
Our primary local and on-site coverage is East Tennessee. We also provide remote and extended regional support for Chattanooga, Nashville, and Asheville when the engagement is a fit.
View All Service Areas →Straight answers. If you have a question that's not here, just call us.
Tell us what's slowing your team down. We'll tell you how we'd fix it — no commitment, no pressure.