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Pro Easy to scale
Azure Search can easily be scaled up or down through the admin panel. Users can choose to allocate or de-allocate resources how they see fit.
Pro Guaranteed search performance
Azure Search provides dedicated capacity guarantees which ensure that search performance will be steady for your application.
Pro Free tier available
There's a free tier available with up to 10000 documents and 3 indices.
Con Does not integrate with many environments
Azure Search supports only .NET, NodeJS and iOS out of the box at the moment.