Two Engineers interviewed at Google for a DevSecOps role. One got rejected. One got hired. Same interviews. Different understanding of fundamental security layers. Here’s the must-know DevSecOps Security Stack if you’re looking to break into this role. Layer 1: Identity & Access Control The foundation of zero trust. - IAM policies that actually make sense. - MFA everywhere, no exceptions. - Service accounts with least privilege. - RBAC for granular permissions. Get this wrong? Attackers walk through your front door. Layer 2: Network Security Your perimeter defense. - Firewalls and security groups. - VPCs with proper segmentation. - WAF blocking malicious traffic. - DDoS protection at the edge. Each misconfiguration is an open invitation. Layer 3: Application Security Where most breaches start. - SAST scanning in CI/CD. - DAST testing live endpoints. - Dependency scanning for CVEs. - Secrets management, never hardcoded. This layer determines if you ship vulnerabilities. Layer 4: Data Protection Your crown jewels need armor. - Encryption at rest and in transit. - Key management with rotation. - Data classification and DLP. - Backup strategies with testing. Poor choices here mean compliance nightmares. Layer 5: Threat Detection You can't stop what you can't see. - SIEM for log aggregation. - IDS/IPS for intrusion detection. - Behavioral analytics for anomalies. - Threat intelligence integration. Production incidents? This layer catches them early. Layer 6: Compliance & Governance The non-negotiables. - SOC 2, ISO 27001, GDPR requirements. - Policy as code with OPA. - Audit trails for everything. - Risk assessments and remediation. Skip this? Legal shuts you down. Layer 7: Security Automation The competitive advantage. - Auto-remediation of vulnerabilities. - Continuous compliance checking. - Threat response orchestration. - Security chaos engineering. Companies mastering this respond to incidents in minutes, not days. Master this stack, master DevSecOps interviews. Follow saed for more & subscribe to the newsletter: https://lnkd.in/eD7hgbnk I am now on Instagram: instagram.com/saedctl say hello, DMs are open
DevOps Integration Strategies
Explore top LinkedIn content from expert professionals.
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I reduced our Annual AWS bill from ₹15 Lakhs to ₹4 Lakhs — in just 6 months. Back in October 2024, I joined the company with zero prior industry experience in DevOps or Cloud. The previous engineer had 7+ years under their belt. Just two weeks in, I became solely responsible for our entire AWS infrastructure. Fast forward to May 2025, and here’s what changed: ✅ ECS costs down from $617 to $217/month — 🔻64.8% ✅ RDS costs down from $240 to $43/month — 🔻82.1% ✅ EC2 costs down from $182 to $78/month — 🔻57.1% ✅ VPC costs down from $121 to $24/month — 🔻80.2% 💰 Total annual savings: ₹10+ Lakhs If you’re working in a startup (or honestly, any company) that’s using AWS without tight cost controls, there’s a high chance you’re leaving thousands of dollars on the table. I broke everything down in this article — how I ran load tests, migrated databases, re-architected the VPC, cleaned up zombie infrastructure, and built a culture of cost-awareness. 🔗 Read the full article here: https://lnkd.in/g99gnPG6 Feel free to reach out if you want to chat about AWS, DevOps, or cost optimization strategies! #AWS #DevOps #CloudComputing #CostOptimization #Startups
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Most companies don't have an API problem. They have an API discovery problem. How to address it? Your APIs already run on AWS, Azure, or other gateways. They work fine. The real challenge? Nobody can find them, understand them, or adopt them easily. Every API integration requires multiple calls and months of dev work. Here's what typically happens: • APIs scattered across Postman, GitHub, and multiple gateways • Documentation is outdated or buried in Confluence • Internal teams asking, "Wait, do we have an API for that?" • Potential partners are unable to onboard themselves • Compliance and governance nightmares Sound familiar? This is where a proper developer portal changes everything. Not another gateway. Not more infrastructure. Just one unified portal where all your APIs live, are documented, and ready to use. This is exactly what Digitalapi.ai, partner of this post, does: 1) Auto-discovery across your entire stack Connect your AWS gateways, Postman workspaces, and GitHub repos. AI automatically finds, catalogs, and documents every API. No manual work needed. 2) AI-powered documentation that never gets stale Every endpoint update is instantly reflected in your docs. Internal teams and external partners always see the current state, eliminating the number 1 reason integrations fail. 3) Built-in governance and compliance Automatic checks ensure your APIs meet security standards and compliance requirements. No more manual audits or spreadsheet tracking. You know something is wrong the moment an issue is introduced. 4) Branded portal for 3rd party adoption Open your APIs to external developers through a professional, branded portal. They can discover, test, and integrate, all self-service. That means so many fewer calls! 5) Monetization built in Turn API access into revenue with subscription tiers, usage-based pricing, and automated billing. Your APIs become a business channel, not just a technical feature. Just like it always should have been. The result? • Internal teams find and use existing APIs instead of rebuilding them • Partners onboard themselves without bothering your engineering team • New revenue streams from API subscriptions • Faster integrations = faster partnerships = faster growth Your API already exists. Make it discoverable, governable, and monetizable. Check out http://www.DigitalAPI.ai and see how a proper dev portal transforms scattered APIs into a growth engine. Did you ever struggle with an API integration? Let me know in the comments :) #productmanagement #api #apistrategy
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Mastering the API Ecosystem: Tools, Trends, and Best Practices The image I recently created illustrates the diverse toolset available for API management. Let's break it down and add some context: 1. Data Modeling: Tools like Swagger, RAML, and JsonSchema are crucial for designing clear, consistent API structures. In my experience, a well-defined API contract is the foundation of successful integrations. 2. API Management Solutions: Platforms like Kong, Azure API Management, and AWS API Gateway offer robust features for API lifecycle management. These tools have saved my teams countless hours in handling security, rate limiting, and analytics. 3. Registry & Repository: JFrog Artifactory and Nexus Repository are great for maintaining API artifacts. A centralized repository is key for version control and dependency management. 4. DevOps Tools: GitLab, GitHub, Docker, and Kubernetes form the backbone of modern API development and deployment pipelines. Embracing these tools has dramatically improved our delivery speed and reliability. 5. Logging & Monitoring: Solutions like ELK Stack, Splunk, Datadog, and Grafana provide crucial visibility into API performance and usage patterns. Real-time monitoring has often been our first line of defense against potential issues. 6. Identity & Security: With tools like Keycloak, Auth0, and Azure AD, implementing robust authentication and authorization becomes manageable. In an era of increasing security threats, this layer cannot be overlooked. 7. Application Infrastructure: Docker, Istio, and Nginx play vital roles in containerization, service mesh, and load balancing – essential components for scalable API architectures. Beyond the Tools: Best Practices While having the right tools is crucial, success in API management also depends on: 1. Design-First Approach: Start with a clear API design before diving into implementation. 2. Versioning Strategy: Implement a solid versioning system to manage changes without breaking existing integrations. 3. Developer Experience: Provide comprehensive documentation and sandbox environments for API consumers. 4. Performance Optimization: Regularly benchmark and optimize API performance. 5. Feedback Loop: Establish channels for API consumers to provide feedback and feature requests. Looking Ahead As we move forward, I see trends like GraphQL, serverless architectures, and AI-driven API analytics shaping the future of API management. Staying adaptable and continuously learning will be key to leveraging these advancements. What's Your Take? I'm curious to hear about your experiences. What challenges have you faced in API management? Are there any tools or practices you find indispensable?
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If you’re working with Kubernetes in production, here are the deployment strategies you must know ~ not just for prod deployments ~ these show up a lot in Kubernetes scenario & system-design questions 1. Canary → Release to a small % of users first → Use when you want to validate behavior under real traffic with minimal risk 2. Blue-Green → Two identical environments, switch traffic instantly → Use when you need zero downtime and fast rollback 3. A/B → Route different users to different versions → Use when comparing features, UX, or experiments (not just releases) 4. Rolling → Gradually replace pods with new ones → Use for safe, default updates with no full outage 5. Recreate → Kill old pods, then start new ones → Use when versions cannot coexist (schema or state conflicts) 6. Shadow → Duplicate traffic without affecting users → Use to test performance, scaling, or ML models silently Most Kubernetes interviews won’t ask you to define these. They’ll ask why you chose one over the other under constraints. If you found this useful.. • • • 🔔 Follow me (Vishakha) for more Cloud & DevOps insights ♻️ Share so others can learn as well!
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𝗦𝗲𝗰𝘂𝗿𝗲 & 𝗦𝗰𝗮𝗹𝗮𝗯𝗹𝗲 𝗗𝗲𝗽𝗹𝗼𝘆𝗺𝗲𝗻𝘁 𝗣𝗶𝗽𝗲𝗹𝗶𝗻𝗲 𝗕𝘂𝗶𝗹𝘁 𝗼𝗻 𝗗𝗲𝘃𝗦𝗲𝗰𝗢𝗽𝘀 𝗣𝗿𝗶𝗻𝗰𝗶𝗽𝗹𝗲𝘀 ❗ Architectural Overview: 1️⃣ GitLab (Source & Pipeline Trigger) Centralized platform for source code and CI/CD orchestration. Code push triggers pipelines that include: Linting & unit testing Docker image build Vulnerability scanning (Trivy/Snyk) Push to container registry Commit of updated manifests to GitOps repo 2️⃣ GitOps Repository Contains Helm charts, Kustomize configs, and declarative Kubernetes manifests. Managed separately from the source repo to maintain infrastructure/application separation of concerns. Version-controlled and PR-driven to enforce peer reviews for infra changes. 3️⃣ Argo CD (GitOps Controller) Installed in a Kubernetes Management Cluster to monitor the GitOps repo. Detects changes and applies them automatically to the target cluster. Provides visual status, rollback, drift detection, and controlled sync policies. 4️⃣ Webhook Mechanism GitLab webhooks notify Argo CD or intermediary services of repo changes. Ensures near-real-time synchronization between Git state and cluster state. 5️⃣ Container Registry Receives scanned and signed container images from the CI pipeline. Only verified, vulnerability-free images are deployed downstream. 6️⃣ Deployment Cluster (Runtime) Final execution environment for application workloads. Manifests applied exclusively via GitOps to ensure reproducibility and traceability. Role-based access and network policies enforced at cluster level. 🛡️ Built-In Security Layers: CVEs scanned in CI stage, with pipeline blockers for critical vulnerabilities. Distroless images and digest locking used to mitigate image drift. Policy-as-code tools (OPA/Gatekeeper or Kyverno) enforce compliance at the Kubernetes layer. Auditability across Git, Registry, and Cluster actions. This architecture ensures: ✔️ Declarative, auditable infrastructure ✔️ Consistency between Git and runtime state ✔️ Secure, policy-driven container delivery ✔️ Scalable and production-grade GitOps automation Designed for teams aiming to reduce manual ops, increase release velocity, and integrate security from the first commit to production deployment.
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🚀 Building Observable Infrastructure: Why Automation + Instrumentation = Production Excellence and Customer Success After building our platform's infrastructure and application automation pipeline, I wanted to share why combining Infrastructure as Code with deep observability isn't optional—it's foundational as shown in screenshots implemented on Google Cloud. The Challenge: Manual infrastructure provisioning and application onboarding creates consistency gaps, slow deployments, and zero visibility into what's actually happening in production. When something breaks at 3 AM, you're debugging blind. The Solution: Modular Terraform + OpenTelemetry from Day One with our approach centered on three principles: 1️⃣ Modular, Well architected Terraform modules as reusable building blocks. Each service (Argo CD, Rollouts, Sonar, Tempo) gets its own module. This means: 1. Consistent deployment patterns across environments 2. Version-controlled infrastructure state 3. Self-service onboarding for dev teams 2️⃣ OpenTelemetry Instrumentation of every application during onboarding as a minimum specification. This allows capturing: 1. Distributed traces across our apps / services / nodes (Graph) 2. Golden signals (latency, traffic, errors, saturation) 3. Custom business metrics that matter. 3️⃣ Single Pane of Glass Observability Our Grafana dashboards aggregate everything: service health, trace data, build pipelines, resource utilization. When an alert fires, we have context immediately—not 50 tabs of different tools. Real Impact: → Application onboarding dropped from days to hours → Mean time to resolution decreased by 60%+ (actual trace data > guessing) → nfrastructure drift: eliminated through automated state management → Dev teams can self-service without waiting on platform engineering Key Learnings: → Modular Terraform requires discipline up front but pays dividends at scale. → OpenTelemetry context propagation consistent across your stack. → Dashboards should tell a story by organising by user journey. → Automation without observability is just faster failure. You need both. The Technical Stack: → Terraform for infrastructure provisioning → ArgoCD for GitOps-based deployments → OpenTelemetry for distributed tracing and metrics → Tempo for trace storage → Grafana for unified visualisation The screenshot shows our command center : → Active services → Full trace visibility → Automated deployments with comprehensive health monitoring. Bottom line: Modern platform engineering isn't about choosing between automation OR observability. It's about building systems where both are inherent to the architecture. When infrastructure is code and telemetry is built-in, you get reliability, velocity, and visibility in one package. Curious how others are approaching this? What's your observability strategy look like in automated environments? #DevOps #PlatformEngineering #Observability #InfrastructureAsCode #OpenTelemetry #SRE #CloudNative
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In today’s always-on world, downtime isn’t just an inconvenience — it’s a liability. One missed alert, one overlooked spike, and suddenly your users are staring at error pages and your credibility is on the line. System reliability is the foundation of trust and business continuity and it starts with proactive monitoring and smart alerting. 📊 𝐊𝐞𝐲 𝐌𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 𝐌𝐞𝐭𝐫𝐢𝐜𝐬: 💻 𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞: 📌CPU, memory, disk usage: Think of these as your system’s vital signs. If they’re maxing out, trouble is likely around the corner. 📌Network traffic and errors: Sudden spikes or drops could mean a misbehaving service or something more malicious. 🌐 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧: 📌Request/response counts: Gauge system load and user engagement. 📌Latency (P50, P95, P99): These help you understand not just the average experience, but the worst ones too. 📌Error rates: Your first hint that something in the code, config, or connection just broke. 📌Queue length and lag: Delayed processing? Might be a jam in the pipeline. 📦 𝐒𝐞𝐫𝐯𝐢𝐜𝐞 (𝐌𝐢𝐜𝐫𝐨𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐨𝐫 𝐀𝐏𝐈𝐬): 📌Inter-service call latency: Detect bottlenecks between services. 📌Retry/failure counts: Spot instability in downstream service interactions. 📌Circuit breaker state: Watch for degraded service states due to repeated failures. 📂 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞: 📌Query latency: Identify slow queries that impact performance. 📌Connection pool usage: Monitor database connection limits and contention. 📌Cache hit/miss ratio: Ensure caching is reducing DB load effectively. 📌Slow queries: Flag expensive operations for optimization. 🔄 𝐁𝐚𝐜𝐤𝐠𝐫𝐨𝐮𝐧𝐝 𝐉𝐨𝐛/𝐐𝐮𝐞𝐮𝐞: 📌Job success/failure rates: Failed jobs are often silent killers of user experience. 📌Processing latency: Measure how long jobs take to complete. 📌Queue length: Watch for backlogs that could impact system performance. 🔒 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲: 📌Unauthorized access attempts: Don’t wait until a breach to care about this. 📌Unusual login activity: Catch compromised credentials early. 📌TLS cert expiry: Avoid outages and insecure connections due to expired certificates. ✅𝐁𝐞𝐬𝐭 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬 𝐟𝐨𝐫 𝐀𝐥𝐞𝐫𝐭𝐬: 📌Alert on symptoms, not causes. 📌Trigger alerts on significant deviations or trends, not only fixed metric limits. 📌Avoid alert flapping with buffers and stability checks to reduce noise. 📌Classify alerts by severity levels – Not everything is a page. Reserve those for critical issues. Slack or email can handle the rest. 📌Alerts should tell a story : what’s broken, where, and what to check next. Include links to dashboards, logs, and deploy history. 🛠 𝐓𝐨𝐨𝐥𝐬 𝐔𝐬𝐞𝐝: 📌 Metrics collection: Prometheus, Datadog, CloudWatch etc. 📌Alerting: PagerDuty, Opsgenie etc. 📌Visualization: Grafana, Kibana etc. 📌Log monitoring: Splunk, Loki etc. #tech #blog #devops #observability #monitoring #alerts
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Dear DevOps Engineers, If your infra is a single EC2 → SSH and docker-compose up is fine If you’re managing dozens of environments → IaC, GitOps, and drift detection aren’t optional /— If your app runs once a week → manual deploys are fine If you deploy 10 times a day → automate rollbacks, health checks, and change approvals /— If one engineer touches infra → shared credentials might work If ten do → centralise auth, use OIDC, rotate secrets, and log every action /— If your metrics fit on a dashboard → Grafana and Prometheus will do If you’ve got thousands of pods → learn service discovery, exemplars, and distributed tracing /— If your users are internal → uptime is a goal If they’re paying customers → SLAs and SLOs define your roadmap /— If you’re testing in staging → mocks are okay If you’re testing production resilience → chaos engineering is your friend /— If you have one repo → simple pipelines work If you have 200 microservices → templates, reusable CI/CD modules, and governance matter /— If your infra fits in one VPC → manual routes are fine If you’re cross-region or hybrid → Transit Gateway, IPAM, and PrivateLink are your new toys /— If you’re a solo DevOps → scripts get you far If you’re scaling a platform org → platforms as products, self-service, and golden paths win – People think DevOps is about writing YAML and CI pipelines. It’s about: - Knowing when to automate and when not to - Deciding when to fix a flaky deploy or kill it for good - Balancing velocity with safety every single day DevOps engineers keep the system reliable, so others can build without fear. Found value? Repost it. Follow Mohamed A. for more DevOps insights, stories and war lessons.
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🧾 Today I automated a full AWS cost-saving audit using nothing but Bash, AWS CLI, and jq. ✅ To learn more, checkout the project: https://lnkd.in/efmb-uBw As a DevOps engineer, I’ve seen how cloud costs can sneak up when environments grow - especially in multi-team setups. So I built a suite of scripts to scan for common silent budget killers: 🔍 What the audit covers: 💸 On-Demand EC2 Instances - not covered by Savings Plans or Reserved Instances 🧹 Unattached (forgotten) EBS volumes - still billing after EC2 is gone 🗓️ Old RDS snapshots - sitting idle and growing in size 🗃️ S3 buckets without lifecycle policies - no object expiration = endless cost 🌐 Data transfer risks - public IPs, missing VPC endpoints, cross-AZ traffic 🛑 Idle Load Balancers - ALBs/NLBs with 0 traffic in days = money drain Each script logs results with summaries, and suggestions. The best part? No third-party tools. Just raw AWS CLI power and CloudWatch metrics. ✅ If you're managing cloud infrastructure, it's worth automating cost hygiene like this. Want to exchange ideas or set this up in your environment? Let’s connect. #aws #devops #finops #cost #optimization #bash
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