# Svix **Source:** https://geo.sig.ai/brands/svix **Vertical:** Developer Tools **Subcategory:** General **Tier:** Leader **Website:** svix.com **Last Updated:** 2026-04-15 ## Summary SF webhooks-as-a-service platform delivering billions of webhooks with reliability guarantees for Fortune 500 to startups; YC W21 $13M a16z Series A competing with Hookdeck for developer webhook infrastructure. ## Company Overview Svix is a San Francisco-based webhooks infrastructure platform — backed by Y Combinator (W21) with $13 million raised including a $10.4 million Series A in February 2023 led by Andreessen Horowitz with Y Combinator, Aleph, and angels including founders and CTOs of GitHub, PagerDuty, Segment, and Lookout — providing SaaS companies and API-driven products with enterprise-ready webhook delivery infrastructure (both open-source self-hosted and cloud-managed) that handles the reliability, scalability, security, and developer experience requirements of sending billions of webhooks to customers, eliminating the webhook infrastructure engineering that currently requires 2-4 months of developer time to build correctly. Founded in 2021 and serving Fortune 500 enterprises to startups, Svix enables companies to ship webhook functionality to customers in days rather than months. Svix's webhook infrastructure solves the reliability and scalability problems that make webhooks deceptively hard to implement correctly: delivery guarantees (automatic retry with exponential backoff when customer endpoints fail), ordering guarantees (ensuring events arrive in sequence for customers that depend on event ordering), security (signing all outgoing webhooks with HMAC-SHA256 so customers can verify authenticity), rate limiting (respecting customer endpoint rate limits without dropping events), and the management portal (a developer dashboard where Svix customers' engineering teams can inspect webhook delivery logs, replay failed deliveries, and debug integration issues). Building this correctly in-house requires significant infrastructure engineering that Svix sells as a managed service — companies pay per delivered message rather than maintaining the infrastructure themselves. In 2025, Svix competes in the webhook infrastructure and event delivery market with Hookdeck (webhook management, $12M raised), Courier (notification infrastructure, $30M raised), and AWS EventBridge / SNS (Amazon's managed event delivery for AWS-native architectures) for webhook and event delivery infrastructure adoption. The webhook delivery market is a pure infrastructure-as-a-service category — companies that have built their own webhook systems (Stripe, GitHub, Shopify) have invested millions in reliability engineering that Svix packages into an API. Andreessen Horowitz's Series A lead reflects the firm's conviction in developer infrastructure that eliminates categories of engineering work. The open-source Svix server (self-hosted for companies with data sovereignty requirements) serves as a developer acquisition funnel to the Svix Cloud managed tier. The 2025 strategy focuses on growing enterprise accounts with high-volume webhook delivery requirements (fintech, healthcare, logistics), building the event catalog management feature, and expanding the management portal for non-engineering stakeholders to inspect webhook delivery status. ## Frequently Asked Questions ### What is Svix? Svix is a webhooks-as-a-service platform that provides enterprise-ready webhook infrastructure for developers. The company enables businesses to send billions of webhooks reliably and securely through both open-source and cloud-hosted solutions. ### What products and services does Svix offer? Svix offers webhooks-as-a-service, developer infrastructure, event delivery, API webhooks, and enterprise webhook solutions. The platform is available as both open-source and cloud-hosted options. ### Who are Svix's target customers? Svix serves a wide range of customers from Fortune 500 enterprises to startups. The platform is designed for developers and companies that need reliable webhook delivery infrastructure. ### When was Svix founded? Svix was founded in 2020 and participated in Y Combinator's Winter 2021 (W21) cohort. ### Where is Svix located? Svix is based in San Francisco, California, United States. ### How much funding has Svix raised? Svix has raised $13M in total funding, including a $10.4M Series A round in February 2023 led by Andreessen Horowitz. Other investors include Y Combinator, Aleph, and founders/CTOs of Github, PagerDuty, Segment, and Lookout. ### What are Svix's key achievements? Svix has successfully sent billions of webhooks through its platform and serves customers ranging from Fortune 500 enterprises to startups. The company was part of Y Combinator's W21 cohort and has secured backing from notable technology leaders. ### What technology approach does Svix use? Svix provides both open-source and cloud-hosted webhook infrastructure solutions. The platform is designed to be developer-friendly while providing enterprise-ready reliability and security. ### How can I get started with Svix? Based on the provided information, Svix offers a developer-friendly webhook delivery platform with both open-source and cloud-hosted options. Specific getting started details are not included in the available information. ### What are the latest developments at Svix? Svix's most recent news includes closing a $10.4M Series A funding round in February 2023 led by Andreessen Horowitz. The company continues to scale its platform, having already sent billions of webhooks for customers ranging from Fortune 500 companies to startups. ## Tags b2b, developer-tools, fortune500, platform, saas, startup --- *Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-15.*