API Keys and Secrets Management in the Cloud
Where cloud secrets belong: AWS Secrets Manager, Parameter Store, Google Secret Manager, and Azure Key Vault, scoped API tokens on Vultr and Linode, delivery to applications, rotation, and leak detection.
Cloud Library
Practical guides to cloud providers, account concepts, developer workflows, security basics and email infrastructure.
Cloud Audit Logs: What They Record and Why They Matter
What cloud audit logs record, how AWS CloudTrail, Google Cloud Audit Logs, the Azure Monitor activity log, and Alibaba Cloud ActionTrail differ, and how to retain, search, protect, and alert on them.
Cloud Acceptable Use Policies: What Providers Expect From Account Holders
What cloud acceptable use policies prohibit on AWS, DigitalOcean, Amazon SES, and other providers, the extra rules for email sending, how abuse enforcement works, and how to keep an account compliant.
Port 25 and Cloud Email Sending: Why Providers Restrict It
Why cloud providers restrict outbound port 25 on new accounts, what ports 587 and 465 are for, how authenticated relays and Amazon SES replace direct delivery, and how providers handle lift requests.
SPF, DKIM, and DMARC: Email Authentication Setup
How SPF, DKIM, and DMARC work, what alignment means, how to configure them for Amazon SES and Google Workspace, and a safe rollout order from p=none to p=reject.
Transactional vs Marketing Email: Infrastructure Differences
How transactional and marketing email differ in triggers, consent, volume, and reputation, why they need separate sending identities, and how to run both on Amazon SES.
Email Deliverability Basics: Reputation, Warm-Up, and Bounces
How sender reputation is built and lost, why new IPs and domains need warm-up, how to handle bounces and complaints automatically, and the list hygiene that keeps mail in the inbox.
SMTP vs API for Sending Email from Applications
SMTP interface or HTTPS API for application email: how each works on Amazon SES, a side by side comparison of effort, portability, features, and errors, and when to use which.
Business & Startups
All in this topicPlanning, cost control, provider choice, research computing, email and account handover for teams.
A Cloud Infrastructure Plan for Early-Stage Startups
A practical infrastructure plan for early-stage startups on AWS, Google Cloud, or DigitalOcean: account structure, one deployment pattern, a minimum managed stack, cost controls, access that survives hires, and a phased checklist.
Cloud Cost Optimization: Ten Habits That Keep Bills Predictable
Ten practical habits that keep cloud bills predictable on Azure, Oracle Cloud, and Hetzner: budgets, tagging, weekly bill reviews, right-sizing, scheduled shutdowns, spot capacity, retention rules, egress, and commitments.
Multi-Cloud for Small Teams: When It Helps and When It Hurts
When a small team benefits from more than one cloud provider and when it only adds duplication: geography, data residency, unique services, and credits versus doubled IAM, networking, egress, and on-call knowledge.
How to Choose a Cloud Provider for Your Business
How to choose a cloud provider for a business: start from your workloads, answer seven deciding questions, compare Google Cloud, IBM Cloud, and OVHcloud profiles, score a shortlist, and run a short evaluation.
Cloud Fundamentals
All in this topicAccounts, quotas, credits, pricing models, storage and networking explained across providers.
What Is a Cloud Account? Organizations, Projects, Billing, and Access
What a cloud account really contains: resources, identity, billing, and quotas. How AWS accounts, Google Cloud projects, and Azure subscriptions differ, and what to review when you take one over.
IaaS vs PaaS vs SaaS: Where Each Cloud Provider Fits
IaaS, PaaS, and SaaS define how much of the stack you run versus the provider. See where AWS, Google Cloud, Azure, DigitalOcean, Hetzner, and Google Workspace fit, and how to choose a layer.
Cloud Regions and Availability Zones: How to Choose a Location
Regions and availability zones decide latency, price, quotas, data residency, and fault tolerance. How AWS, Google Cloud, Azure, DigitalOcean, Hetzner, and BinaryLane structure locations, and how to choose.
What Is a vCPU? Understanding Cloud Compute Sizing
A vCPU is a share of a physical processor, not a whole core. Learn how shared, dedicated, and burstable vCPUs differ, how vCPU quotas work, and how to size a cloud server.
Developer Workflows
All in this topicDeploying servers, containers, Kubernetes, infrastructure as code, CI/CD, serverless and GPU work.
Deploying Your First Cloud Server: A Practical Checklist
A practical checklist for deploying a first cloud server on DigitalOcean, Vultr, Hetzner, or any VPS provider: region, image, sizing, SSH hardening, firewalls, private networking, backups, and alerts.
SSH Keys for Cloud Servers: Generate, Add, and Rotate
How SSH key authentication works, how to generate an Ed25519 key pair, where to add public keys on Linode, UpCloud, Kamatera, EC2, Compute Engine, and Azure, and how to rotate keys safely.
Running Docker on a Cloud VPS: Setup and Best Practices
Install Docker on a DigitalOcean, Hetzner, or BinaryLane VPS, lock down port publishing and the Docker socket, run a stack with Compose, and manage volumes, backups, and image updates.
Managed Kubernetes Across Providers: EKS, GKE, AKS, DOKS, LKE, and IKS
A practitioner's comparison of EKS, GKE, AKS, DOKS, LKE, and IKS: what managed covers, identity and networking integration, control plane pricing models, quotas, and a security baseline.
Email Infrastructure
All in this topicPort 25, SPF, DKIM, DMARC, deliverability, and SMTP versus API sending.
Port 25 and Cloud Email Sending: Why Providers Restrict It
Why cloud providers restrict outbound port 25 on new accounts, what ports 587 and 465 are for, how authenticated relays and Amazon SES replace direct delivery, and how providers handle lift requests.
SPF, DKIM, and DMARC: Email Authentication Setup
How SPF, DKIM, and DMARC work, what alignment means, how to configure them for Amazon SES and Google Workspace, and a safe rollout order from p=none to p=reject.
Transactional vs Marketing Email: Infrastructure Differences
How transactional and marketing email differ in triggers, consent, volume, and reputation, why they need separate sending identities, and how to run both on Amazon SES.
Email Deliverability Basics: Reputation, Warm-Up, and Bounces
How sender reputation is built and lost, why new IPs and domains need warm-up, how to handle bounces and complaints automatically, and the list hygiene that keeps mail in the inbox.
Provider Guides
All in this topicHow each listed provider organises accounts, regions, billing and services, written for practitioners.
AWS Explained: Core Services, Regions, and How the Platform Is Organized
A practical overview of how AWS is organised: accounts and Organizations, IAM identity, regions and availability zones, core services by category, billing, budgets, and the service quotas that shape every account.
Google Cloud Explained: Projects, Compute, Data, and AI Services
How Google Cloud is organised: projects, folders, and the organization resource, billing accounts and credits, Cloud IAM roles, regions and zones, and the compute, data, and AI services teams use most.
Microsoft Azure Explained: Subscriptions, Resource Groups, and Core Services
How Microsoft Azure is structured: Entra ID tenants, subscriptions, resource groups, Azure RBAC, regions and availability zones, core compute, storage, database, and AI services, plus billing, budgets, and quotas.
DigitalOcean Droplets Explained: Plans, Images, and Networking
DigitalOcean Droplets explained: teams and projects, shared and dedicated CPU plan families, images, snapshots and backups, regions, VPC networking, Droplet limits, billing, and the port 25 policy.
Security Basics
All in this topicMFA, IAM, VPS hardening, secrets, audit logs and acceptable use policies.
Cloud Account Security Essentials: MFA, Roles, and Least Privilege
The three controls that stop most cloud account compromises: MFA on the root identity, roles instead of long lived keys, and least privilege on AWS, Google Cloud, and Azure, plus a takeover checklist.
IAM Basics: Users, Roles, and Policies Across Cloud Providers
How identities, groups, policies, and scopes fit together in AWS IAM, Google Cloud IAM, Azure RBAC, Oracle Cloud compartments, and IBM Cloud access groups, with patterns that work on every provider.
Securing a VPS: Firewalls, Fail2ban, and Automatic Updates
Harden a Linux VPS on DigitalOcean, Hetzner, or BinaryLane with a provider firewall and ufw, key only SSH, Fail2ban jails for public services, and unattended security updates that keep packages patched.
API Keys and Secrets Management in the Cloud
Where cloud secrets belong: AWS Secrets Manager, Parameter Store, Google Secret Manager, and Azure Key Vault, scoped API tokens on Vultr and Linode, delivery to applications, rotation, and leak detection.