SDKs (Software Development Kits): SDKs, which include libraries, frameworks, and tools, are used to extend the functionality of Java and Kotlin in mobile app development. Here's where SDKs are commonly used:

• 1.Social Media Integration: SDKs like Facebook SDK and Twitter SDK are used to integrate social media features into mobile apps for sharing, authentication, and social interactions.
• 2.Location-Based Services: SDKs like Google Maps SDK and Mapbox SDK are used to add location-based features to apps, such as maps, navigation, and geolocation.
• 3.Analytics and Crash Reporting: SDKs like Firebase Analytics and Crashlytics are used to gather data, analyze user behavior, and monitor app performance.
• 4.Payment Processing: SDKs like Stripe and PayPal SDKs enable secure payment processing within mobile apps for e-commerce and financial transactions.
• 5.Authentication: SDKs like Firebase Authentication and OAuth SDKs are used for user authentication and authorization.
• 6.Push Notifications: SDKs like Firebase Cloud Messaging (FCM) and Apple Push Notification Service (APNs) are used to send push notifications to mobile devices.
• 7.Ad Integration: SDKs like AdMob and MoPub are used to display ads within mobile applications and monetize apps.