SNS vs SQS vs EventBridge — Overview AWS offers three core messaging/eventing services that are often confused. Each serves a distinct purpose: SQS for queuing (point-to-point buffering), SNS for pub/sub (fan-out notifications), and EventBridge for event routing (content-based filtering from many sources). Choosing the right one — or combining them — is a frequent SAP-C02 […]
AWS Event-Driven Serverless Architecture — Overview Event-driven architecture (EDA) decouples services by communicating through events rather than direct calls. Combined with serverless compute, it provides automatic scaling, zero idle cost, and fault-tolerant loose coupling. This is a core pattern for SAP-C02 (architectural decisions) and DOP-C02 (automation and failure handling). Event-Driven Serverless Architecture on AWS ── […]
SQS Standard vs FIFO Queue differences: ordering, deduplication, throughput, pricing, and when to use each. Includes FIFO High Throughput Mode (70K TPS) and exam practice questions.
AWS SQS vs SNS vs EventBridge AWS provides multiple messaging and event-driven services for decoupling application components. SQS is a message queue for point-to-point communication, SNS is a pub/sub notification service, and EventBridge is a serverless event bus for event-driven architectures. These services are often used together but serve different purposes. SQS vs SNS vs […]
📌 Updated Guide Available: See our comprehensive SQS Standard vs FIFO – Complete Comparison with Practice Questions for the latest 2026 features including FIFO High Throughput Mode. AWS SQS Standard vs FIFO Queue SQS offers two types of queues – Standard & FIFO queues SQS Standard vs FIFO Queue Features Message Order Standard queues […]
Kinesis Data Streams vs SQS Purpose Amazon Kinesis Data Streams allows real-time processing of streaming big data and the ability to read and replay records to multiple Amazon Kinesis Applications. Amazon Kinesis Client Library (KCL) delivers all records for a given partition key to the same record processor, making it easier to build multiple applications […]
AWS SQS Standard Queue SQS offers standard as the default queue type. Standard queues support at-least-once message delivery. However, occasionally (because of the highly distributed architecture that allows nearly unlimited throughput), more than one copy of a message might be delivered out of order. Standard queues support a nearly unlimited number of API calls per […]
SQS FIFO Queues provide exactly once delivery, prevents duplicates and preserves message order within the message group
Amazon SQS Features Visibility timeout defines the period where SQS blocks the visibility of the message and prevents other consuming components from receiving and processing that message. Dead-letter queues – DLQ helps source queues (Standard and FIFO) target messages that can’t be processed (consumed) successfully. DLQ Redrive policy specifies the source queue, the dead-letter queue, […]
SQS provides fully managed, reliable, highly-scalable, hosted queue for storing messages in transit between loosely couple applications and requires no administrative overhead and little configuration.