# Integration patterns — MERN Deployment Patterns

Source: https://www.geekswithgeeks.com/en/mern-deployment/mern-deployment-11

> Apply foundations 3 in MERN Deployment Patterns.

## Understand Integration patterns

In **MERN Deployment Patterns**, connect the goal, constraints, risks, and measurable outcome before selecting a workflow.

## See the workflow

Understand the context, make a focused decision, verify the result, then improve.

![A four-stage learning workflow.](assets/figures/mern-deployment/section-3-map.svg) — Figure 3.1 — Understand, act, verify, improve.

## A useful comparison

Treat this as a route plan: every step should lead to a checked destination.

Check your reasoning.

**Quiz:** What should come before selecting a workflow?

- [x] A clear goal, constraints, and evidence.
- [ ] An unverified copy.
- [ ] No safety review.

*Answer:* A clear goal, constraints, and evidence.. Evidence and constraints make decisions reviewable and safer.