# Project structure and organization — API Gateway & Service Mesh

Source: https://www.geekswithgeeks.com/en/api-gateway-service-mesh/api-gateway-service-mesh-16

> Apply foundations 4 in API Gateway & Service Mesh.

## Understand Project structure and organization

In **API Gateway & Service Mesh**, use foundations 4 to connect the problem, constraints, and measurable outcome before selecting an approach.

## Practise the workflow

Start small, verify one result, and record what the evidence changes.

![A four-stage learning workflow.](assets/figures/api-gateway-service-mesh/section-4-map.svg) — Figure 4.1 — Understand, act, verify, improve.

## A useful comparison

Think of this as a route plan: each step should lead to a checked destination.

Check your reasoning.

**Quiz:** What should come before choosing an approach?

- [x] A clear goal and constraints.
- [ ] An unverified copy.
- [ ] No measurement.

*Answer:* A clear goal and constraints.. Evidence makes a decision reviewable.