It's easy to miss, but the sample URL from previous sections contains a required appid parameter. You must store this key in your Angular app. You can store it in the weather service, but in reality, applications need to be able to target different sets of resources as they move from development to testing, staging, and production environments. Out of the box, Angular provides two environments: one prod and the other one as the default.

1. Copy your appid, which will have a long string of characters and numbers
2. Store your appid in environment.ts
3. Configure baseUrl for later use:

src/environments/environment.ts
export const environment = {
  production: false,
  appId: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
  baseUrl: 'http://',
}