Managed cloud security brings continuous protection into environments that change far faster than traditional perimeter infrastructure. Depending on the operating model, it can include managed detection and response, cloud posture management, identity controls, secure infrastructure operations, DevSecOps, vulnerability management, and compliance monitoring. Buyers should pay close attention to who owns remediation, which cloud platforms are covered, how 24/7 response works, and whether the provider can integrate with existing security tooling. The strongest fit depends on whether an organization needs a managed SOC, cloud engineering, or both.
1. Itexus
Itexus combines cloud infrastructure engineering with software development and DevOps for business-critical applications. Its cloud work covers AWS, Microsoft Azure, Google Cloud, and IBM Cloud, including secure infrastructure setup, migration, infrastructure-as-code, monitoring, backup, and production support. Current security controls published by the company include identity and access management, encryption, network segmentation, firewalls, endpoint protection, logging, alerting, and incident response.
For organizations that want cloud security connected directly to application delivery, Itexus offers a practical engineering-led model. Security is handled alongside architecture, deployment, recovery planning, and ongoing operations, which is useful when a cloud environment supports regulated or data-sensitive software rather than a standalone infrastructure estate.
Key Facts
- Best for: Security-conscious cloud applications and managed production environments
- Core services: Managed cloud security, cloud infrastructure, DevOps, migration, monitoring, backup, software engineering
- Technologies: AWS, Microsoft Azure, Google Cloud, IBM Cloud
- Security focus: IAM, encryption, segmentation, monitoring, incident response
- Headquarters: Dover, DE, USA
- Founded: 2013
- Team size: 150+ engineers
Contact Information
- Website: itexus.com
- Email: moc.suxeti@ofni
- Address: 8, The Green, STE road, Dover, DE 19901, United States
- LinkedIn: www.linkedin.com/company/itexus
- Facebook: www.facebook.com/itexus
- Twitter: x.com/ItexusSoft
- Instagram: www.instagram.com/itexus.soft
2. eSentire
eSentire runs managed detection and response with a dedicated MDR for AWS service. It monitors AWS security events, cloud resources, virtualized endpoints and web-facing applications and APIs, and adds resource inventory, best-practice and compliance monitoring to catch misconfigurations and resource misuse. SOC analysts and threat hunters work around the clock, isolating threats and remediating critical cloud misconfigurations.
The AWS service also bundles managed vulnerability scanning, DDoS mitigation, managed IDS/IPS and a managed WAF. eSentire states a 15-minute mean time to contain and holds AWS Level 1 MSSP status for cloud security. It suits AWS-heavy companies that want detection, response and posture checks from one provider.
Key Facts
- Best for: AWS-centric companies needing 24/7 managed detection and response
- Core services: MDR, cloud posture monitoring, managed WAF, vulnerability scanning, incident response
- Specialization: Managed detection and response for AWS cloud environments
- Headquarters: Waterloo, Canada
- Founded: 2001
- Team size: 501–1,000 employees
Contact Information
- Website: esentire.com
- Phone: 1-866-579-2200
3. Optiv
Optiv delivers cloud security as a phased program. It starts with a Cloud Technical Assessment and a Cloud Security Architecture Assessment to find vulnerabilities and misconfigurations, then moves to CNAPP deployment and tuning for workload protection, visibility and policy enforcement. Remediation covers detecting and fixing configuration drift through CNAPP and infrastructure-as-code.
Its managed side includes a Cyber Fusion Center and agentic security operations. It fits organizations that want a cloud security program designed, deployed and then supported over time.
Key Facts
- Best for: Enterprises building a structured cloud security program
- Core services: Cloud assessments, CNAPP deployment, cloud governance, migration security, managed operations
- Specialization: Phased cloud security programs from assessment to ongoing maturity
- Headquarters: Denver, CO, USA
- Founded: 2015
- Team size: 1,001–5,000 employees
Contact Information
- Website: optiv.com
4. Accenture
Accenture provides managed security services for cloud environments, including a managed secure cloud foundation and managed security services on AWS. Its cloud security work brings together infrastructure-as-code, automated guardrails, cloud-native controls, identity, policy, and ongoing operational management. The broader cybersecurity portfolio also supports security transformation and co-sourced or outsourced security operations.
This model is suited to large organizations that need cloud controls integrated with a wider enterprise security program. Accenture can connect cloud architecture, governance, automation, and managed operations across complex environments where security ownership spans multiple teams, regions, and business units.
Key Facts
- Best for: Large enterprise cloud security programs
- Core services: Managed security, cloud security architecture, guardrails, security operations
- Cloud focus: AWS and broader enterprise cloud environments
- Engagement model: Managed and co-sourced cybersecurity operations
- Headquarters: Dublin, Ireland
- Founded: 1989
- Team size: 10,001+ employees
Contact Information
- Website: www.accenture.com
- Phone: +19174524400
- Address: 395 9th Avenue, New York, NY, 10001
5. A-listware
A-listware combines managed IT, cloud infrastructure services, and cybersecurity support. Its published managed security capabilities include infrastructure security management, continuous monitoring, SIEM-related work, incident response support, compliance oversight, vulnerability assessment, penetration testing, and application and cloud security. Cloud management can be delivered alongside AWS, Azure, DevOps, and broader infrastructure operations.
The company fits businesses that prefer to keep cloud administration, software support, and security within one technical relationship. That structure is useful when security work must follow ongoing infrastructure changes instead of being limited to a one-time assessment.
Key Facts
- Best for: Managed IT combined with cloud and security operations
- Core services: Cloud management, managed security, monitoring, DevOps, vulnerability assessment
- Security scope: Infrastructure, applications, cloud environments, compliance
- Engagement model: Managed services and extended technical teams
- Headquarters: London, UK
Contact Information
- Website: a-listware.com
- Phone: +1 (888) 337 93 73
- Email: moc.erawtsil-a@ofni
- Address: North Bergen, NJ 07047, USA
- LinkedIn: www.linkedin.com/company/a-listware
- Facebook: www.facebook.com/alistware
6. Rackspace Technology
Rackspace Technology offers cloud native security services for organizations that need help designing, deploying, and managing security technologies in public cloud environments. The service addresses continuous monitoring, threat management, application security, perimeter protection, vulnerabilities, and managed security technologies within cloud platforms.
Its main advantage for many buyers is the connection between cloud operations and security operations. Organizations already outsourcing infrastructure management can use Rackspace to keep security tooling, platform management, and production support within a coordinated cloud operating model.
Key Facts
- Best for: Organizations outsourcing cloud operations and security together
- Core services: Cloud native security, managed cloud, monitoring, threat management
- Cloud focus: Public cloud and cloud-native environments
- Notable strength: Security management tied to ongoing cloud operations
- Headquarters: San Antonio, TX, USA
- Team size: 1,001–5,000 employees
Contact Information
- Website: www.rackspace.com
- Phone: 1800 961 2888
- Email: moc.ecapskcar@ecitonlagel
- Address: 19122 US Highway 281N Ste 128, San Antonio, TX 78258-7667, United States
- LinkedIn: www.linkedin.com/company/rackspace-technology
- Facebook: www.facebook.com/rackspacetechnology
- Twitter: x.com/Rackspace
- Instagram: www.instagram.com/rackspace_technology
7. OSKI Solutions
OSKI Solutions works across cloud architecture, migration, infrastructure automation, DevOps, observability, and ongoing operations. Its cloud practice covers AWS, Microsoft Azure, and Google Cloud, while security is incorporated through hardening, identity controls, private networking, secrets handling, automated scanning, infrastructure-as-code, monitoring, and rollback practices.
The company is a fit for teams that want cloud security embedded in day-to-day platform engineering rather than separated into an isolated security project. Cloud operations, CI/CD, Kubernetes, monitoring, and software support can remain connected as the environment changes.
Key Facts
- Best for: Cloud operations with DevSecOps engineering
- Core services: Cloud architecture, migration, DevOps, infrastructure automation, monitoring
- Technologies: AWS, Microsoft Azure, Google Cloud
- Security focus: Hardening, identity, secrets, scanning, monitoring
- Headquarters: Tallinn, Estonia
- Team size: 51–200 employees
Contact Information
- Website: oski.site
- Email: etis.ikso@tcatnoc
- Address: Kaupmehe tn 7-120, Tallinn, 10114, Estonia
- LinkedIn: www.linkedin.com/company/oski-solutions
8. CrowdStrike
CrowdStrike provides managed cloud protection through Falcon Cloud Security and Falcon Complete. Its cloud detection and response capabilities cover cloud assets and workloads with continuous visibility, threat detection, proactive hunting, investigation, and 24/7 managed response. The service spans endpoints, identities, cloud workloads, and other connected security data through the Falcon platform.
This approach is particularly relevant when runtime cloud threats and rapid response are primary concerns. Organizations can use CrowdStrike experts to operate managed protection around cloud workloads without building an equivalent round-the-clock internal response team.
Key Facts
- Best for: 24/7 managed cloud detection and response
- Core services: Cloud detection and response, MDR, threat hunting, workload protection
- Service area: Cloud workloads, identities, endpoints, connected security telemetry
- Engagement model: Fully managed expert-led protection
- Headquarters: Austin, TX, USA
- Founded: 2011
- Team size: 10,001+ employees
Contact Information
- Website: www.crowdstrike.com
- Phone: 1.888.512.8906
- Email: moc.ekirtsdworc@ofni
- LinkedIn: www.linkedin.com/company/crowdstrike
- Twitter: x.com/CrowdStrike
- Instagram: www.instagram.com/crowdstrike
9. Arctic Wolf
Arctic Wolf Cloud Detection and Response provides 24/7 monitoring across IaaS and SaaS resources, with managed investigation, guided response, remediation support, and ongoing configuration by its Concierge Security Team. The service monitors cloud activity for attacks and misconfigurations while connecting cloud signals to broader managed detection and response workflows.
It is a strong fit for organizations that want cloud monitoring integrated with endpoint, network, identity, and SaaS security operations. The managed model reduces the need for internal teams to tune alerting and investigate every suspicious cloud event on their own.
Key Facts
- Best for: Outsourced cloud detection and response
- Core services: Cloud monitoring, managed investigation, MDR, guided remediation
- Service area: IaaS, SaaS, endpoints, networks, identity
- Engagement model: 24/7 managed security operations
- Headquarters: Eden Prairie, MN, USA
- Founded: 2012
- Team size: 1,001–5,000 employees
Contact Information
- Website: arcticwolf.com
- Phone: 1-888-272-8429
- Email: moc.flowcitcra@rp
- Address: 8939 Columbine Rd, Eden Prairie, MN 55347
- LinkedIn: www.linkedin.com/company/arctic-wolf-networks
- Facebook: www.facebook.com/ArcticWolfNetworks
- Twitter: x.com/AWNetworks
10. Protera
Protera has a dedicated managed cloud security service covering continuous monitoring, threat detection, vulnerability management, compliance management, risk assessment, and incident response. Its cloud security work spans infrastructure, applications, network controls, digital forensics, and secure DevOps, backed by a 24/7 security operations model.
The service is closely connected with Protera's broader managed cloud practice across AWS, Microsoft Azure, and Google Cloud. That combination suits enterprises that want security management integrated with cloud operations, modernization, and ongoing platform support.
Key Facts
- Best for: Managed cloud operations with integrated security
- Core services: 24/7 monitoring, incident response, vulnerability management, compliance
- Technologies: AWS, Microsoft Azure, Google Cloud
- Security model: Integrated SecOps with managed cloud services
- Headquarters: Westchester, IL, USA
- Founded: 1998
- Team size: 201–500 employees
Contact Information
- Website: www.protera.com
- Phone: 877-707-7683
- Email: moc.aretorp@gnitekram
- Address: 1 Westbrook Corporate Center, Suite 560, Westchester, IL 60154
- LinkedIn: www.linkedin.com/company/protera
11. IBM
IBM Cloud Security Services protect hybrid cloud and multicloud environments through continuous visibility, management, remediation, threat management, and compliance assessment. The service supports centralized monitoring of cloud-native controls, cloud security posture management, containers, automated remediation, and secure-by-design practices. IBM Managed Security Services adds continuous monitoring, management, response, and threat intelligence.
This scope is suited to large enterprises with established hybrid environments and multiple security technologies. IBM can connect cloud posture, threat operations, incident response, identity, and infrastructure security within a broader managed security program.
Key Facts
- Best for: Enterprise hybrid and multicloud security operations
- Core services: Cloud security, managed security, remediation, threat response, compliance
- Cloud focus: Hybrid and multicloud environments
- Operations: Continuous monitoring and managed threat response
- Headquarters: Armonk, NY, USA
- Founded: 1911
- Team size: 10,001+ employees
Contact Information
- Website: www.ibm.com
- Phone: 1-800-426-4968
- Address: 1 New Orchard Road Armonk, New York, 10504-1722, United States
- LinkedIn: www.linkedin.com/company/ibm
- Twitter: x.com/ibm
- Instagram: www.instagram.com/ibm
12. UnderDefense
UnderDefense provides managed cloud security for AWS, Microsoft Azure, Google Cloud, Kubernetes, SaaS, and hybrid environments. Its service combines 24/7 monitoring, proactive threat detection, managed investigation, response, remediation guidance, cloud security assessment, and compliance support. Signals from cloud platforms can be integrated with SIEM, EDR, and other security tools for centralized investigation.
The service is aimed at teams that need continuous cloud security operations without expanding an internal SOC. UnderDefense combines platform automation with analyst oversight so organizations can address misconfigurations, prioritize genuine threats, and coordinate recovery across cloud environments.
Key Facts
- Best for: Managed cloud detection and response
- Core services: 24/7 monitoring, MDR, cloud assessment, incident investigation, remediation
- Technologies: AWS, Microsoft Azure, Google Cloud, Kubernetes
- Security model: Managed SOC and cloud security automation
- Founded: 2017
- Team size: 51–200 employees
Contact Information
- Website: underdefense.com
- Phone: +19299995101
- Email: moc.esnefedrednu@pleh
- LinkedIn: www.linkedin.com/company/underdefense
- Facebook: www.facebook.com/UnderDefense
- Instagram: www.instagram.com/underdefense_cybersecurity
13. Integrity360
Integrity360 operates a dedicated managed cloud security service focused on cloud risk management, real-time configuration monitoring, policy enforcement, compliance, risk prioritization, remediation, and multi-cloud visibility. The service can also connect with SOC operations and reporting so cloud security is managed as part of a broader cyber program.
Its wider managed security portfolio includes MDR, SIEM, NDR, exposure management, incident response, data security, and professional security services. This makes Integrity360 relevant to organizations that want cloud controls coordinated with endpoint, network, identity, and incident response processes.
Key Facts
- Best for: Managed cloud security within a broader cyber program
- Core services: Managed cloud security, MDR, SIEM, exposure management, incident response
- Cloud focus: Multi-cloud risk, configuration, policy, compliance
- Notable strength: Cloud security integrated with managed SOC services
- Headquarters: Dublin, Ireland
- Founded: 2005
- Team size: 501–1,000 employees
Contact Information
- Website: www.integrity360.com
- Phone: +35312934027
- Email: moc.063ytirgetni@ofni
- Address: Termini, 3 Arkle Rd, Sandyford, Sandyford Business Park, Dublin 18, D18 T6T7
- LinkedIn: www.linkedin.com/company/integrity360
- Twitter: x.com/integrity360
14. Gilzor
Gilzor combines cloud infrastructure engineering, DevOps, application security, and ongoing software maintenance. Its technical stack includes AWS, Docker, Kubernetes, Ansible, GitHub Actions, and CircleCI, supporting the deployment and operation of production applications. The company also addresses security risks such as exposed secrets, weak authentication, insecure database access, and OWASP vulnerabilities during its production-readiness work.
Gilzor's approach connects cloud security with application architecture, deployment processes, and continuous technical support. This makes it relevant for product companies that need security improvements alongside infrastructure optimization, software development, and long-term application maintenance.
Key Facts
- Best for: Product companies requiring cloud infrastructure and application security support
- Core services: Cloud engineering, DevOps, application security, security remediation, software development, production support
- Specialization: Cloud infrastructure and production application security
- Cloud technologies: AWS, Docker, Kubernetes, Ansible
- Offices: Warsaw, Poland; Limassol, Cyprus
- Notable strength: Integrating security improvements with application engineering and ongoing infrastructure support
- Headquarters: Warsaw, Poland
Contact Information
- Website: www.gilzor.com
- Email: moc.rozlig@stcatnoc
- Address: Poland, Warsaw, Office 58, street Adama Mickiewicza 37, 01-625
- LinkedIn: www.linkedin.com/company/gilzor-softwaredevelopment
Comparison Table
| Company | Best for | Headquarters | Founded | Team size |
| Itexus | Security-conscious cloud applications and managed production environments | Dover, DE, USA | 2013 | 150+ engineers |
| eSentire | AWS-centric companies needing 24/7 managed detection and response | Waterloo, Canada | 2001 | 501–1,000 employees |
| Optiv | Enterprises building a structured cloud security program | Denver, CO, USA | 2015 | 1,001–5,000 employees |
| Accenture | Large enterprise cloud security programs | Dublin, Ireland | 1989 | 10,001+ employees |
| A-listware | Managed IT combined with cloud and security operations | London, UK | — | — |
| Rackspace Technology | Organizations outsourcing cloud operations and security together | San Antonio, TX, USA | — | 1,001–5,000 employees |
| OSKI Solutions | Cloud operations with DevSecOps engineering | Tallinn, Estonia | — | 51–200 employees |
| CrowdStrike | 24/7 managed cloud detection and response | Austin, TX, USA | 2011 | 10,001+ employees |
| Arctic Wolf | Outsourced cloud detection and response | Eden Prairie, MN, USA | 2012 | 1,001–5,000 employees |
| Protera | Managed cloud operations with integrated security | Westchester, IL, USA | 1998 | 201–500 employees |
| IBM | Enterprise hybrid and multicloud security operations | Armonk, NY, USA | 1911 | 10,001+ employees |
| UnderDefense | Managed cloud detection and response | — | 2017 | 51–200 employees |
| Integrity360 | Managed cloud security within a broader cyber program | Dublin, Ireland | 2005 | 501–1,000 employees |
| Gilzor | Product companies requiring cloud infrastructure and application security support | Warsaw, Poland | — | — |
How to Choose a Managed Cloud Security Provider
A managed cloud security provider should reduce your exposure, not just add another stream of alerts. The useful questions are about coverage, response authority, and who fixes what. Compare providers on how they detect and act on real threats in your specific cloud accounts, not on the length of their tool list.
Coverage of your actual stack. List your clouds, accounts, Kubernetes clusters, serverless functions, and SaaS identity providers, then ask which ones the provider monitors natively. Check whether they ingest CloudTrail, Azure Activity Logs, GCP audit logs, and container runtime data. Gaps in multi-account or multi-cloud coverage are common and rarely shown in marketing material.
Authority to contain threats. Ask what the provider can do on its own at 3 a.m.: disable a compromised key, isolate a workload, revoke a session, or block an IP. Agree on these actions in a written response playbook. A provider that can only open tickets leaves containment to your team, which defeats the purpose of 24/7 monitoring.
Who owns remediation. Posture findings such as public buckets, overly broad IAM roles, or unencrypted storage need someone to fix them. Clarify whether the provider changes configuration directly, submits infrastructure-as-code pull requests, or only reports issues. Ask for a sample posture report and check whether findings are prioritized by real exploitability or simply listed by count.
Identity and access focus. Most cloud breaches involve stolen credentials or excessive permissions rather than exotic exploits. Ask how the provider detects unusual role assumptions, long-lived access keys, and privilege escalation paths. Strong providers review least-privilege regularly and can show how they spotted credential misuse for other clients.
Compliance evidence you can use. If you face SOC 2, ISO 27001, PCI DSS, or HIPAA audits, ask whether the provider maps controls to those frameworks and produces evidence auditors accept. Request a sample report. Also check the provider's own certifications and how they protect the privileged access they will hold to your environment.
Detection quality and tuning. Ask how they keep false positives down and how quickly they tune rules for your environment during onboarding. Request metrics they report monthly, such as mean time to detect and respond, and examples of escalations with full context. A flood of untriaged alerts forwarded to your inbox is a clear red flag.
Conclusion
Managed cloud security is becoming less about buying another isolated control and more about assigning clear operational ownership. Some organizations need a provider to watch cloud telemetry and contain threats around the clock, while others need engineers to build security into architecture, infrastructure-as-code, CI/CD, identity, and application delivery. Before selecting a provider, define the cloud platforms in scope, the expected response actions, compliance obligations, escalation paths, and the boundary between the provider and the internal team. Multi-cloud visibility and automated remediation are increasingly important, but they only create value when alerts lead to accountable action. A well-defined service model should make it clear who monitors, who investigates, who fixes, and how improvements are carried into ongoing cloud operations.
Frequently Asked Questions
What does managed cloud security include?
It usually includes continuous monitoring of cloud logs, threat detection and response, cloud security posture management, vulnerability scanning, and identity monitoring. Many providers also offer compliance reporting, DevSecOps support, and incident response retainers. The exact scope varies widely, so confirm which services are included in the base fee and which are billed separately.
How much do managed cloud security services cost?
Pricing is typically a monthly subscription based on the number of cloud accounts, workloads, users, or data volume ingested. Costs rise with 24/7 response, hands-on remediation, multi-cloud coverage, and compliance reporting. Ask whether the price includes the security tooling licenses or whether you must buy those separately, since this can change the total considerably.
Is managed cloud security different from MDR?
Yes, though they overlap. MDR focuses on detecting and responding to active threats, often across endpoints and networks. Managed cloud security adds cloud-specific work such as posture management, IAM review, misconfiguration fixes, and securing infrastructure as code. Some providers offer both as one service, while others cover only the detection side.
Who is responsible for security in the cloud, us or the provider?
Under the shared responsibility model, the cloud platform secures the underlying infrastructure, while you remain responsible for configuration, identities, data, and applications. A managed security provider takes on part of your share, but accountability for data protection stays with you. Put the division of duties into the contract so nothing falls between parties.
How long does it take to onboard a managed cloud security provider?
Basic monitoring can often start within a few weeks once log access is granted. Full onboarding, including rule tuning, response playbooks, and posture baselines, typically takes one to three months. Delays usually come from slow access approvals, many unmanaged accounts, or missing logging that has to be enabled first.