Alma Trevino

Keep service boundaries aligned with stable product boundaries, not premature scaling hunches.

Microservices make sense only when your team faces a specific constraint worth solving.

Agents need per-identity credentials and database-level tenant enforcement, not just role limits.

MCP standardizes tool access while LangChain orchestrates reasoning—each solves a different problem.

Backends must make identity, permissions, data, and events explicit for Claude MCP tools.

Use spans and evaluation loops to catch agent errors that traditional monitoring misses.

AI agents shatter seat-based pricing, forcing SaaS founders toward usage or outcome billing.

AI agents need idempotent webhook handlers to survive duplicate deliveries from impatient senders.

Build agent systems on open protocols to survive vendor price hikes and API deprecations.

Design your internal APIs for unpredictable clients, not deterministic code.

Ensure billing events process in order to prevent revenue leaks.

Webhooks push real-time events; APIs pull data on demand—production systems need both.

Attackers use login form responses to identify real accounts before credential stuffing.

Distinguish where each layer sits and why treating a gateway as a load balancer costs real money.

Shrinking your cardholder data environment cuts PCI compliance costs and complexity significantly.

Three billing patterns account for most friendly fraud in SaaS subscriptions.

SaaS tax compliance splits into three layers most founders miss until penalties arrive.

SaaS companies lose money by misclassifying chargebacks as fraud or mistakes.

Understanding nexus rules is the first step to finding where you actually owe sales tax.

Run both systems in parallel until every credential moves over safely.

Balance access token lifetime against refresh rotation to stop attackers without slowing users down.

Enterprise buyers demand SAML support regardless of technical merit.

Chargebacks cost SaaS companies far more than refunds — in fees, time, and ratio damage.

Choose your database isolation model now or rebuild it later during a compliance crisis.