Cloud answers
Direct, technical answers from Celestibia Solutions engineers to the questions companies ask most about AWS consulting, reducing AWS cost, cloud migration, DevOps as a Service, managed Kubernetes and Amazon EKS, DevSecOps and AWS security. Each answer starts with a short summary, then goes into detail.
- What is AWS consulting?AWS consulting is professional help to plan, build, migrate, secure, optimize and operate workloads on Amazon Web Services. An AWS consulting partner assesses your goals and current environment, designs architecture against AWS best practices such as the Well-Architected Framework, implements it, and often continues as a managed service provider.
- How can I reduce my AWS bill?To reduce your AWS bill, first find where money goes with Cost Explorer and tags, then delete idle resources, rightsize oversized instances and databases, move steady workloads to Savings Plans or Reserved Instances, use Spot for interruptible work, add S3 lifecycle policies, and cut data transfer and NAT gateway charges. Review spend monthly so savings stick.
- What is DevOps as a Service?DevOps as a Service is a model where an external team designs, builds and operates your software delivery toolchain: CI/CD pipelines, infrastructure as code, containers and Kubernetes, monitoring and release processes. You get mature DevOps practices and on-call expertise without hiring and managing a full in-house DevOps team.
- What is managed Kubernetes?Managed Kubernetes means someone else operates parts of your Kubernetes platform. Cloud services such as Amazon EKS, Azure Kubernetes Service and Google Kubernetes Engine run the control plane for you. A managed Kubernetes service provider goes further and operates the whole platform: cluster design, add-ons, upgrades, security, scaling, monitoring and incident response.
- EKS vs self-managed Kubernetes: which should you choose?For most teams on AWS, Amazon EKS is the better choice: AWS operates a highly available control plane, upgrades are simpler, and it integrates natively with IAM, VPC and load balancers for a small hourly cluster fee. Self-managed Kubernetes on EC2 only makes sense with unusual requirements, such as custom control-plane configuration, and a team ready to run etcd and upgrades themselves.
- What is DevSecOps?DevSecOps is the practice of building security into every stage of software delivery instead of checking it at the end. In a DevSecOps pipeline, code is scanned with static analysis, dependencies and container images are checked for known vulnerabilities, secrets are kept in a vault, infrastructure policies are enforced as code, and running applications are tested dynamically before release.
- How do you migrate an application to AWS?To migrate an application to AWS, assess it and its dependencies, choose a migration strategy (such as rehost, replatform or refactor), prepare a secure AWS landing zone, replicate data and test the application on AWS, then cut over in a planned window with a rollback plan. After migration, rightsize and optimize based on real usage.
- What are the AWS security best practices?The most important AWS security best practices are: protect the root user and enforce MFA, use least-privilege IAM roles instead of long-lived keys, enable CloudTrail, AWS Config, GuardDuty and Security Hub in every account, encrypt data with AWS KMS, keep workloads in private subnets, block public S3 access, patch and scan continuously, and rehearse incident response.
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