How to Improve SEO on Angular Websites Using Angular Universal

import { Component, OnInit } from '@angular/core';
import { Meta, Title } from '@angular/platform-browser';

@Component({
  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.css']
})
export class HomeComponent implements OnInit {
  constructor(private meta: Meta, private title: Title) {
    this.meta.addTags([
      { name: 'description', content: 'Home page of SEO friendly app' },
      { name: 'author', content: 'buttercms' },
      { name: 'keywords', content: 'Angular, ButterCMS' }
    ]);
    this.setTitle('Home Page');
  }

  public setTitle(newTitle: string) {
    this.title.setTitle(newTitle);
  }

  ngOnInit() {
  }
}

// angular.json
"architect": {
  "build": { ... },
  "prerender": {
    "builder": "@angular-devkit/build-angular:prerender",
    "options": {
      "routes": ["/", "/about", "/contact"]
    }
  }
}