--- title: So Your Event Sourcing Champion Just Left the Company...... description: When the architect who championed event sourcing leaves, teams often panic and consider reverting to CRUD. Before doing so, it's worth understanding why event... canonical: https://daily.dev/posts/so-your-event-sourcing-champion-just-left-the-company-now-what--deoea5i5a twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: So Your Event Sourcing Champion Just Left the Company... Now What? | daily.dev og:description: When the architect who championed event sourcing leaves, teams often panic and consider reverting to CRUD. Before doing so, it's worth understanding why event... og:url: https://daily.dev/posts/so-your-event-sourcing-champion-just-left-the-company-now-what--deoea5i5a og:image: https://api.daily.dev/og/posts/Deoea5I5A.png og:image:alt: So Your Event Sourcing Champion Just Left the Company... Now What? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # So Your Event Sourcing Champion Just Left the Company... Now What? **[Event Store](https://daily.dev/sources/eventstore)** · 5 min read · 0 upvotes · 0 comments ## Summary When the architect who championed event sourcing leaves, teams often panic and consider reverting to CRUD. Before doing so, it's worth understanding why event sourcing was chosen: it provides full audit trails, modular decoupling, and richer data for debugging and AI/ML. The migration cost back to CRUD is often underestimated. Practical advice includes adopting a hybrid approach (keeping event sourcing for complex business workflows, using CRUD for simpler data), investing in team upskilling through hands-on practice, courses, and community support, and leveraging commercial support packages like KurrentDB for production issues. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### When should I use event sourcing versus a plain CRUD approach for a business process? Event sourcing works best for critical operations with frequent, rule-heavy updates involving multiple parties, where past actions affect future outcomes, such as payment processing (authorized, captured, refunded, disputed, resolved) or order fulfillment (placed, paid, reserved, shipped, returned, refunded). CRUD remains appropriate for simpler, less strategic functions like reference data, user preferences, and basic admin screens. _daily.dev surfaces architecture trade-off discussions for teams weighing event sourcing against CRUD._ ### What are the practical benefits of event sourcing over CRUD for debugging and compliance? Event sourcing records every change as an immutable event, preserving the full history of how a system reached its current state rather than just the current state itself. This supports audits and regulatory compliance by verifying transaction integrity over time, enables debugging by replaying the exact sequence of events that led to a bug, and can supply AI/ML systems with richer causal context than a CRUD system that overwrites and deletes data. _Engineers evaluating audit and debugging needs can find event sourcing trade-off analyses on daily.dev._ ## Similar posts on daily.dev - [What Event Sourcing Changed in My Head](https://daily.dev/posts/what-event-sourcing-changed-in-my-head-6oew5wb1a) · ElixirStatus · 0 upvotes · 0 comments - [The event sourcing architecture we didn't build](https://daily.dev/posts/the-event-sourcing-architecture-we-didn-t-build-2srag98tf) · monday Engineering · 26 upvotes · 0 comments - [Developers' tips for Event Sourcing & EDA](https://daily.dev/posts/developers-tips-for-event-sourcing-eda-9ezyc9slp) · Event Store · 0 upvotes · 0 comments - [Fixing bugs in Event Sourcing is hard, for real?](https://daily.dev/posts/fixing-bugs-in-event-sourcing-is-hard-for-real--5jiiodj7f) · Event-Driven by Oskar Dudycz · 1 upvotes · 0 comments - [Event Sourcing: A simple trick to get around read models](https://daily.dev/posts/event-sourcing-a-simple-trick-to-get-around-read-models-ojkizhdey) · We Are .NET · 0 upvotes · 0 comments --- Tags: [#architecture](https://daily.dev/tags/architecture) [View this post on daily.dev](https://daily.dev/posts/so-your-event-sourcing-champion-just-left-the-company-now-what--deoea5i5a) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"So Your Event Sourcing Champion Just Left the Company... 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