FinOps: how to control cloud service costs

· Blog

Transitioning to the cloud promises flexibility and scalability, but often leads to unexpected cost increases. Without proper management, cloud resources can accumulate, and their utilization can be inefficient, creating significant financial pressure on businesses. This is where FinOps comes in – an operational model that combines financial discipline with technical expertise to maximize the value of cloud investments.

What is FinOps and why it matters

FinOps, or Cloud Financial Management, is a cultural practice that brings together people, processes, and technology to understand and control cloud service costs. It’s not just about cost reduction, but rather about how to get the maximum value from every dollar spent on the cloud. The core idea is to foster collaboration between financial, engineering, and operational teams to achieve common goals.

Unlike traditional cost management, FinOps focuses on a dynamic and continuous process. It recognizes that cloud costs are variable (OPEX) and require constant monitoring and optimization, as opposed to capital expenditures (CAPEX) on on-premises infrastructure. This approach is critical for companies aiming to scale while maintaining financial stability.

Key FinOps principles

FinOps is based on several key principles that help companies effectively manage cloud costs:

  • Collaboration: Financial, engineering, and business teams must work together, sharing data and knowledge.
  • Data-driven decision making: All decisions regarding cloud spending should be based on accurate data about usage and cost.
  • Centralization and transparency: A clear understanding of who pays for what is fundamental.
  • Accountability: Each team should understand its impact on cloud costs.
  • Optimization: Continuously seeking ways to improve efficiency and reduce costs.
  • Variable cost model: Recognizing that cloud costs are variable and require a flexible approach.

Stages of FinOps implementation

FinOps implementation is a cyclical process that includes three main stages:

  1. Inform

    At this stage, teams gain a complete understanding of their cloud costs. This includes data collection, analysis, and visualization. It’s important to have a clear picture of which services are being used, by whom, how, and what they cost. Monitoring and reporting tools play a key role here. For example, Azure Monitor, AWS Cost Explorer, Google Cloud Billing Reports, and Datadog allow tracking resource usage and associated costs.

  2. Optimize

    After gaining information about costs, teams move on to optimizing them. This may include:

    • Rightsizing: Changing the size of virtual machines or other resources according to actual needs.
    • Using Reserved Instances/Savings Plans: Purchasing resources for a long term with significant discounts.
    • Automation: Using DevOps tools (Terraform, Ansible) to automatically shut down unused resources or scale.
    • Deleting unused resources: Identifying and removing “orphaned” resources.
    • Using PaaS/Serverless: Migrating to managed services that optimize costs and management.

    Optimization is a continuous process that requires constant analysis and adaptation.

  3. Operate

    At the operate stage, FinOps is integrated into the company’s daily operations. This means that teams constantly monitor costs, look for new optimization opportunities, and collaborate to achieve financial goals. Implementing policies and procedures, training staff, and fostering a culture of cost accountability are key elements of this stage. Tools like Azure Policy, AWS Organizations, and Cloud Custodian help automate policy compliance.

FinOps vs. traditional cost management

Characteristic Traditional cost management FinOps
Cost model CAPEX (capital expenditures) OPEX (operating expenditures)
Focus Cost reduction Maximizing value from cloud investments
Approach Periodic, reactive Continuous, proactive, cyclical
Responsibility Finance department Shared responsibility (finance, engineering, business)
Tools Accounting systems Cloud consoles, monitoring systems, IaC

How SL Global Service addresses this

The SL Global Service team helps businesses implement FinOps practices for effective control and optimization of cloud costs. SGS engineers apply a comprehensive approach that covers all stages of the FinOps cycle, utilizing technologies from the company’s tech stack.

At the inform stage, SL Global Service specialists integrate and configure monitoring systems such as Azure Monitor, Prometheus, Grafana, and Datadog. This allows for detailed data collection on resource usage in Microsoft Azure, AWS, Google Cloud, and Oracle Cloud, as well as tracking associated costs. Thanks to expertise in Microsoft CSP/EA, VMware VPP, and Oracle ULA, SGS also provides licensing consultations, helping to avoid unnecessary expenses.

For cost optimization, the SGS team employs advanced practices and tools. This includes rightsizing virtual machines and databases (e.g., AWS EC2, Azure Virtual Machines, Google Cloud GKE, Oracle Autonomous DB), and recommendations for using Reserved Instances or Savings Plans. The application of DevOps tools such as Terraform, Ansible, and GitHub Actions enables automated provisioning and deprovisioning of resources, ensuring their efficient use. For example, SGS engineers can configure automatic shutdown of dev/test environments during off-hours, significantly reducing costs. We also assist in implementing strategies for migrating to PaaS services (AWS RDS, Google Cloud Run) and Serverless architectures (AWS Lambda), which optimizes operational costs.

At the operate stage, SL Global Service offers 24/7 managed cloud services, which include continuous cost monitoring and proactive identification of potential issues. We develop and implement cloud resource management policies using Azure Policy or AWS Organizations to ensure adherence to budget constraints and optimal resource utilization. Our IT audit helps identify inefficient spending and propose specific recommendations for reduction. A typical outcome is a 15-30% reduction in cloud costs within the first 6-12 months, while maintaining or improving infrastructure performance.

Implementing FinOps is not a one-time event but a continuous process. To successfully control cloud service costs, companies need to invest in training their teams, fostering a culture of financial accountability, and using specialized tools. Start by auditing current expenses, identify priority areas for optimization, and gradually integrate FinOps practices into your daily operations to transform cloud investments into manageable and predictable outlays.

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