Difference between *ngIf vs [ngSwitch] in Angular 2+

What are the differences between [ngSwitch] and a bunch of *ngIfs. Any performance factors we should be concerned about?

*ngIf

<div *ngIf="day === 'MONDAY'">
Keep calm and pretend it's not Monday.
</div>
...
<div *ngIf="day === 'FRIDAY'">
Happy Friday!
</div>


[ngSwitch]

<ng-container [ngSwitch]="day">

<div *ngSwitchCase="'MONDAY'">
Keep calm and pretend it's not Monday.
</div>
...
<div *ngSwitchCase="'FRIDAY'">
Happy Friday!
</div>

</ng-container>

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