What happens when the internet disappears while using a cloud application? This article explores how to build offline-first applications using AWS services. Learn how local storage, Progressive Web Apps, API Gateway, AWS Lambda, and DynamoDB work together to preserve user data and synchronize it when connectivity returns. Discover practical architecture, data conflict handling, security considerations, and steps to build a more reliable cloud application.

Explore how Virtual Reality and Artificial Intelligence could transform AWS cloud management through immersive 3D infrastructure visualization, voice-controlled operations, intelligent monitoring, and predictive analytics.

What really happens when your code runs in the cloud without you managing a server? Explore the mechanics of serverless computing through AWS Lambda, API Gateway, and DynamoDB. Understand event-driven execution, automatic scaling, cold starts, execution environments, and the trade-offs developers should consider when building serverless applications. Because serverless doesn't mean there are no servers—it means you don't have to manage them.

Want to host a website using AWS? Learn how Amazon S3 can store your website files and help you understand the basics of cloud hosting in this beginner-friendly guide.

Articles focusing on shifting left with security and automating modern cloud deployment blueprints perform exceptionally well.

Learn the basics of Amazon S3, how cloud storage works, common use cases, and how beginners can use S3 to store and manage files in AWS.

Amazon CloudWatch monitors AWS resources using metrics, logs, and alerts to track performance, detect issues, and improve reliability.

An introduction to the data lakehouse architecture — what it is, why it emerged, and how it fits into modern AWS-based pipelines.

I am a 4th-year CSE student preparing for a DevOps career and sharing my learning journey across AWS, Linux, Docker, Git, CI/CD, Kubernetes, and cloud technologies.

Discover how to design scalable, decoupled, and fault-tolerant event-driven data processing pipelines using AWS Lambda, Amazon EventBridge, and DynamoDB.

Amazon CloudWatch RUM (Real User Monitoring) Session Replay gives developers a video-like playback of user experiences on their web applications — capturing clicks, scrolls, page changes, and errors — so they can see exactly what a user encountered in their browser without needing to reproduce the issue. CloudWatch RUM collects client-side performance metrics and error data from both web and mobile applications; Session Replay extends this visibility for web applications by letting developers visually diagnose issues like broken navigation flows or unresponsive UI elements that don't surface in server-side logs. This capability is built for front-end developers and application owners who need to move quickly from a user-reported problem to its root cause. Session Replay helps developers identify user experience issues — such as forms that fail to render or navigation flows that break — that can silently impact conversion and engagement, even when no one reports them. Developers can also replay sessions to study navigation patterns and identify drop-off points. To get started, enable Session Replay in your app monitor and view recorded sessions from the Session Replay tab in the CloudWatch RUM console — the feature is opt-in, supports sensitive field masking, and is included at no additional cost. Session Replay for Amazon CloudWatch RUM is available in all AWS Regions where CloudWatch RUM is supported. To learn more about Session Replay for Amazon CloudWatch RUM, see the  https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-RUM.html . For pricing details, see the  https://aws.amazon.com/cloudwatch/pricing/ .

Learn how to collect performance data for your web application from real user sessions, using CloudWatch RUM.

Amazon CloudWatch RUM (Real User Monitoring) Session Replay gives developers a video-like playback of user experiences on their web applications — capturing clicks, scrolls, page changes, and errors — so they can see exactly what a user encountered in their browser without needing to reproduce the issue. CloudWatch RUM collects client-side performance metrics and error data from both web and mobile applications; Session Replay extends this visibility for web applications by letting developers visually diagnose issues like broken navigation flows or unresponsive UI elements that don't surface in server-side logs. This capability is built for front-end developers and application owners who need to move quickly from a user-reported problem to its root cause. Session Replay helps developers identify user experience issues — such as forms that fail to render or navigation flows that break — that can silently impact conversion and engagement, even when no one reports them. Developers can also replay sessions to study navigation patterns and identify drop-off points. To get started, enable Session Replay in your app monitor and view recorded sessions from the Session Replay tab in the CloudWatch RUM console — the feature is opt-in, supports sensitive field masking, and is included at no additional cost. Session Replay for Amazon CloudWatch RUM is available in all AWS Regions where CloudWatch RUM is supported. To learn more about Session Replay for Amazon CloudWatch RUM, see the  Amazon CloudWatch RUM documentation . For pricing details, see the  Amazon CloudWatch pricing page .

Amazon CloudWatch RUM, which provides real user monitoring for web, iOS, and Android applications, now supports an improved App Monitors overview that surfaces fleet-wide health, SLO breaches, and distributed tracing coverage on a single page. DevOps and SRE teams can now triage critical and degraded monitors, spot worsening trends, and identify gaps in observability setup across their entire fleet without clicking into each monitor individually. The overview groups monitors into four summary cards: Needs attention by health status, Trending worse, Setup and coverage, and SLOs and Alarms. This helps customers see at a glance how many app monitors are critical or degraded, how many are worsening, and how many are missing SLOs or tracing. Quick filters helps narrow the list so customers can focus on specific app monitors by platform, health, SLI status, and tracing state. Each row in the App Monitors table shows session volume, SLI status, health status primary issue type (such as JavaScript errors on a web monitor or performance regressions on an iOS monitor), trend direction, a direct link to traces in AWS X-Ray, linked-service health from CloudWatch Application Signals, and last event received. A selectable side panel shows additional details like correlated sessions, app monitor health and SLO and alarm details which is particularly useful when troubleshooting a given app monitor on the overview page itself, while also allowing to navigate to per-app monitor page for further deep-dive. The CloudWatch RUM App Monitors overview is available in all AWS commercial Regions where CloudWatch RUM is available, at no additional cost. To learn more, see the CloudWatch RUM documentation and the pricing page. To get started, open the CloudWatch in AWS Management and select RUM in the left-navigation panel under APM.

Amazon CloudWatch RUM (Real User Monitoring) is a feature of Amazon CloudWatch that enables developers and operations teams to collect, view, and analyze client-side performance data from real end-user sessions in web and mobile applications. With its expansion to the AWS European Sovereign Cloud, customers operating under strict European data residency and sovereignty requirements can now monitor their web application performance without data leaving the sovereign boundary. This capability is designed for enterprises, public sector organizations, and regulated industries in Europe that require full control over where their data is stored and processed. CloudWatch RUM helps teams proactively identify and resolve performance bottlenecks across both web and mobile applications by surfacing real-time metrics such as page load times, JavaScript errors, HTTP failures, and mobile-specific signals like crash rates and network latency — enabling faster root cause analysis and improved end-user experience. For example, a European public sector organization can use CloudWatch RUM within the AWS European Sovereign Cloud to monitor citizen-facing web portals and mobile apps while maintaining full data sovereignty compliance. CloudWatch RUM in the AWS European Sovereign Cloud is available today in the EU Sovereign (eusc-de-east-1) region — to get started, visit the Amazon CloudWatch RUM documentation.

Amazon CloudWatch RUM now supports iOS and Android applications, expanding real user monitoring beyond web applications. Developers and SREs can now quickly isolate mobile application issues and improve end-user experience, with visibility into performance metrics such as screen load times, crash rates, and API latencies. CloudWatch RUM for mobile uses the OpenTelemetry (OTEL) standard to send spans and events. The service captures mobile spans such as application startup time, screen load time and backend network calls. It also captures events including crashes, and ANRs/AppHangs to provide rich troubleshooting insights on the CloudWatch console. You can perform impact analysis for specific errors or crashes, drill down to correlated telemetry, and filter by location, device type, operating system, and app versions to quickly identify root causes. Mobile telemetry integrates with application metrics, traces, logs, web RUM monitoring, and synthetic monitoring in CloudWatch Application Signals to speed up troubleshooting and reduce application disruption. CloudWatch RUM support for iOS and Android is available in all AWS Commercial Regions where web monitoring is available. To learn more, see pricing, getting started for Android and iOS, and documentation.

Amazon CloudWatch RUM, which enables customers to monitor their web applications by collecting client side performance and error data in real time, is additionally available in the following AWS Regions starting today: AWS GovCloud (US-East), and AWS GovCloud (US-West). CloudWatch RUM provides curated dashboards for web application performance experienced by real end users including anomalies in page load steps, core web vitals, and JavaScript and HTTP errors across different geolocations, browsers, and devices. Custom events and metrics sent to CloudWatch RUM can be easily configured to monitor specific parts of the application for real user interactions, troubleshoot issues, and get alerted for anomalies. CloudWatch RUM comes integrated with the application performance monitoring (APM) capability, CloudWatch Application Signals. As a result, client-side data from your application can easily be correlated with performance metrics such as errors, faults, and latency observed in your APIs (service operations) and dependencies to address the root cause. To get started, see the RUM User Guide. Usage of CloudWatch RUM is charged on the number of collected RUM events, which refers to each data item collected by the RUM web client, as detailed here. 

Amazon CloudWatch RUM, which enables customers to monitor their web applications by collecting client side performance and error data in real time, is additionally available in the following AWS Regions starting today: Asia Pacific (Thailand), and Mexico (Central). CloudWatch RUM provides curated dashboards for web application performance experienced by real end users including anomalies in page load steps, core web vitals, and JavaScript and HTTP errors across different geolocations, browsers, and devices. Custom events and metrics sent to CloudWatch RUM can be easily configured to monitor specific parts of the application for real user interactions, troubleshoot issues, and get alerted for anomalies. CloudWatch RUM comes integrated with the application performance monitoring (APM) capability, CloudWatch Application Signals. As a result, client-side data from your application can easily be correlated with performance metrics such as errors, faults, and latency observed in your APIs (service operations) and dependencies to address the root cause. To get started, see the RUM User Guide. Usage of CloudWatch RUM is charged on the number of collected RUM events, which refers to each data item collected by the RUM web client, as detailed here. 

Amazon CloudWatch RUM, which enables customers to monitor their web applications by collecting client side performance and error data in real time, is additionally available in the following AWS Regions starting today: Asia Pacific (Malaysia), and Canada West (Calgary). CloudWatch RUM provides curated dashboards for web application performance experienced by real end users including anomalies in page load steps, core web vitals, and JavaScript and HTTP errors across different geolocations, browsers, and devices. Custom events and metrics sent to CloudWatch RUM can be easily configured to monitor specific parts of the application for real user interactions, troubleshoot issues, and get alerted for anomalies. CloudWatch RUM comes integrated with the application performance monitoring (APM) capability, CloudWatch Application Signals. As a result, client-side data from your application can easily be correlated with performance metrics such as errors, faults, and latency observed in your APIs (service operations) and dependencies to address the root cause. To get started, see the RUM User Guide. Usage of CloudWatch RUM is charged on the number of collected RUM events, which refers to each data item collected by the RUM web client, as detailed here.