Modern business demands from IT infrastructure not just stability, but also the ability to adapt quickly, scale, and ensure continuity. Instead of capital investments in their own servers and network equipment, companies are increasingly choosing cloud solutions that allow them to convert CAPEX to OPEX and focus on their core activities. This transition is not a fleeting trend, but a strategic step towards increasing operational efficiency and competitiveness.
From on-premises servers to cloud infrastructures
Traditional on-premises infrastructures require significant upfront investments in hardware, licenses, cooling systems, power supply, and physical security. In addition, companies incur ongoing costs for maintenance, updates, and scaling. Cloud platforms, such as Microsoft Azure, AWS, and Google Cloud, offer an “as-a-Service” model, where infrastructure, platform, or software is provided by a vendor. This allows companies to pay only for actually consumed resources, minimize downtime risks, and quickly respond to market changes.
| Parameter | On-premises | Cloud infrastructure |
|---|---|---|
| Initial costs | High (CAPEX) | Low (OPEX) |
| Scalability | Limited, requires planning | High, elastic |
| Maintenance | Full company responsibility | Provider responsibility |
| Reliability/DR | Requires significant investment | Built-in, geographically distributed |
| Security | Full company responsibility | Shared responsibility model |
Cybersecurity in the cloud: protecting data and reputation
Moving to the cloud does not mean delegating all responsibility for security to the provider. The shared responsibility model clearly delineates areas of responsibility: the cloud provider is responsible for the security “of the cloud” (physical infrastructure, networks, virtualization), and the client is responsible for the security “in the cloud” (data, applications, configurations, identity). An effective cloud cybersecurity strategy includes:
- Identity and access protection: using multi-factor authentication (MFA), privileged access management, and the Zero Trust concept.
- Data protection: encryption of data at rest and in transit, backup (BaaS), and disaster recovery (DRaaS) strategies.
- Monitoring and threat detection: SIEM/SOAR systems for centralized log collection and analysis, EDR solutions for endpoint protection.
- Network security: network segmentation, using NGFW, WAF, and VPN.
Optimizing costs and performance with FinOps and DevOps
Simply migrating infrastructure to the cloud is not enough. For maximum efficiency, a holistic approach to cost management and automation is required. This is where FinOps and DevOps come into play.
- FinOps (Cloud Financial Management): This is an operational model that brings together financial and engineering teams to manage cloud costs. It includes cost monitoring, resource utilization analysis, optimization (rightsizing, reserved instances, spot instances), and forecasting. The goal of FinOps is to ensure maximum value from cloud investments, avoiding unnecessary expenses.
- DevOps: This is a methodology that integrates Development and Operations to accelerate software delivery. Applying IaC (Infrastructure as Code) principles with tools like Terraform or Ansible, as well as CI/CD pipelines (GitHub Actions, Azure DevOps), allows for automated infrastructure deployment, application updates, and testing, significantly reducing time-to-market and minimizing human errors.
Hybrid and multi-cloud strategies
A complete transition to a single public cloud is not always optimal. For many enterprises, a hybrid or multi-cloud strategy becomes the ideal solution.
- Hybrid Cloud: Combines a public cloud (e.g., Azure) with a private cloud or on-premises infrastructure. This allows sensitive data to be kept on-premises while using the public cloud for scaling, development, or disaster recovery. Technologies such as Azure Arc, Azure Stack HCI, enable centralized management of resources across different environments.
- Multi-cloud strategy: Involves using services from multiple cloud providers (e.g., AWS for one project, Google Cloud for another). This reduces vendor lock-in, allows choosing the best services for specific tasks, and increases resilience.
How SL Global Service addresses this
Since 2009, the SL Global Service team has been helping Ukrainian businesses implement a cloud-first strategy. SGS engineers develop customized cloud architectures that meet the unique needs of each client, utilizing a wide range of technologies and services.
- Cloud migration and architecture: SL Global Service migrates existing IT systems to Azure, AWS, Google Cloud, or Oracle Cloud, applying lift-and-shift, refactoring, or complete re-architecture approaches. Services like Azure Site Recovery for continuous replication or AWS Migration Hub are used for this. Fault-tolerant and scalable architectures are developed using EC2, EKS, GKE, Azure Virtual Desktop, or Windows 365 for VDI.
- Cybersecurity: SGS engineers implement comprehensive solutions for protecting cloud environments. This includes configuring Microsoft Defender for Cloud, Microsoft Sentinel for SIEM, Cisco Firepower and Fortinet for NGFW, as well as CrowdStrike and Trend Micro for endpoint protection. Identity protection is ensured through Entra ID and Duo.
- DevOps and CI/CD: The SL Global Service team automates development and deployment processes using Terraform, Ansible, GitHub Actions, and Azure DevOps. This allows clients to quickly bring products to market, minimize errors, and optimize operational costs. Kubernetes, EKS, or GKE are used for container orchestration.
- Managed Cloud 24/7 and FinOps: SL Global Service provides a full range of cloud infrastructure management services, including monitoring (Prometheus, Grafana, Azure Monitor), cost optimization (FinOps practices), and 24/7 technical support. The team actively works with Microsoft CSP/EA and Oracle ULA to optimize licensing.
- Backup/DR: Business continuity is achieved through backup and disaster recovery solutions such as Veeam, Commvault, Acronis, and Azure Site Recovery, ensuring RPO and RTO compliance.
Choosing a cloud strategy is not just a technical decision, but a strategic step that affects all aspects of a business. Carefully analyze your needs, risks, and opportunities to choose the optimal path to cloud transformation and ensure the long-term success of your company.