What it means
A PWA is built with web technology but behaves much like a native app. Users can add it to their home screen, open it full screen, use it offline and, on most devices, receive notifications. It updates like a website, without app store releases.
Some device features and store visibility are still better served by native or cross-platform apps.
Why it matters for a business
For internal tools, field apps and customer portals, a PWA can deliver an app-like experience for less than the cost of store apps, with instant updates and one codebase for all devices.
A business example
Things to watch
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Check support for the device features you need.
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Test offline behavior and syncing carefully.
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Plan how users will install it, since there is no store listing by default.
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Notification support varies by device.