# Architecture and main components — API Gateway & Service Mesh

Source: https://www.geekswithgeeks.com/en/api-gateway-service-mesh/api-gateway-service-mesh-03

> Apply practical workflow 1 in API Gateway & Service Mesh.

## Understand Architecture and main components

In **API Gateway & Service Mesh**, use practical workflow 1 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 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.