Modern businesses face ever-increasing demands on their IT infrastructure: rapid deployment of new services, flexible scalability, fault tolerance, and efficient cost management. In an environment of skilled labor shortages and the need to optimize OPEX, migrating to cloud technologies becomes a strategic decision, allowing companies to focus on their core business by delegating complex infrastructure management tasks to providers.
Cloud migration: strategies and challenges
Cloud migration is not just about moving data; it’s a comprehensive transformation of IT infrastructure and business processes. It requires meticulous planning, analysis of the current state, and selection of the optimal strategy. There are various approaches to migration, each with its own advantages and disadvantages:
- Lift-and-shift (rehost): The simplest option, involving moving existing virtual machines or applications to the cloud without significant changes. Suitable for rapid migration, but may not ensure maximum efficiency of cloud resources.
- Refactor (replatform): Involves minor changes to application architecture for better integration with cloud services. This could be a shift from self-managing databases to using managed services such as Azure SQL Database or AWS RDS.
- Rearchitect (rearchitect): A complete redesign of application architecture using cloud-native patterns (e.g., microservices, serverless). This is the most labor-intensive but also the most effective approach, unleashing the full potential of cloud technologies.
- Retire: Discarding outdated or inefficient systems that do not require migration.
- Repurchase (replace): Replacing existing applications with SaaS solutions, for example, migrating from on-premises Exchange to Microsoft 365.
The choice of strategy depends on many factors, including application complexity, budget, timelines, and team qualifications.
Cloud cybersecurity: multi-layered protection
With the transition to cloud environments, the approach to cybersecurity also changes. Responsibility is distributed between the cloud provider (infrastructure protection) and the client (data and application protection). This requires implementing a multi-layered protection system that covers all levels:
- Identity and access management (IAM): Using Microsoft Entra ID, MFA, and Zero Trust principles to control access to resources.
- Network protection: Network segmentation, using NGFW (Cisco Firepower, Fortinet, Palo Alto), WAF, VPN, and SD-WAN for secure connectivity.
- Endpoint protection: EDR solutions (Microsoft Defender for Endpoint, CrowdStrike, Trend Micro) for detecting and responding to threats.
- Data protection: Encryption of data at rest and in transit, DLP solutions.
- Security information and event management (SIEM/SOAR): Using Microsoft Sentinel, Splunk for centralized collection, analysis, and response to security incidents.
Effective cloud cybersecurity is an ongoing process that requires regular auditing, policy updates, and staff training.
Cost optimization (FinOps) and cloud resource management
One of the key advantages of cloud technologies is cost flexibility, shifting from CAPEX to OPEX. However, without proper management, this can lead to uncontrolled cost growth. This is where FinOps comes in – an operational model that brings together financial and engineering teams to jointly manage cloud costs.
| FinOps principle | Description | Examples of tools/practices |
|---|---|---|
| Cost visibility | Clear understanding of how cloud resources are being spent. | Azure Cost Management, AWS Cost Explorer, Datadog |
| Resource optimization | Selecting optimal resource sizes and types (Rightsizing), using Reserved Instances and Spot Instances. | Automated scripts for Rightsizing, CPU/RAM utilization monitoring |
| Automation | Automating resource deployment and management processes to reduce human errors and optimize usage. | Terraform, Ansible, GitHub Actions |
| Collaboration | Close interaction between financial, engineering, and business teams. | Regular meetings, shared dashboards |
Effective FinOps implementation not only reduces costs but also increases the transparency and predictability of cloud expenses, ensuring maximum value from cloud technology investments.
How SL Global Service addresses this
The SL Global Service team offers a comprehensive approach to implementing and managing cloud technologies, leveraging deep expertise and a broad technology stack. SGS engineers perform cloud migration using Lift-and-shift, Refactor, or Rearchitect strategies, depending on client needs. Platforms such as Microsoft Azure, AWS, Google Cloud, and Oracle Cloud are utilized for this purpose. For example, for migrating critical applications to Azure, Azure Site Recovery can be used to ensure minimal RTO/RPO.
In the field of cybersecurity, SL Global Service implements multi-layered protection, using solutions such as Microsoft Defender, CrowdStrike for EDR, Cisco Firepower or Fortinet for NGFW, and Microsoft Sentinel for SIEM/SOAR. This ensures protection against a wide range of threats, from Ransomware to sophisticated targeted attacks. For instance, implementing Microsoft Entra ID with MFA and Conditional Access significantly strengthens identity and access protection.
To optimize costs and effectively manage cloud resources, the SGS team applies FinOps principles. This includes detailed cost monitoring using Azure Monitor or Datadog, analyzing resource utilization for Rightsizing, and implementing automation with Terraform and Ansible for Infrastructure as Code (IaC). SGS engineers also provide 24/7 managed cloud services, allowing clients to fully delegate cloud infrastructure management and focus on their business.
Furthermore, SL Global Service deploys cloud-based virtual desktops (VDI) based on Azure Virtual Desktop or Windows 365, ensuring flexibility and security for remote work. For business continuity, backup/DR solutions are implemented using Veeam or Azure Site Recovery, guaranteeing rapid data and system recovery in case of incidents.
Migrating to cloud technologies is an inevitable step for any business aiming for competitiveness and sustainable development. We recommend starting with a comprehensive IT audit to assess the current state of your infrastructure, identify bottlenecks, and develop a personalized cloud transformation strategy that aligns with your business goals and budget.