Four ways to build in-app integrations in 2024 - with pros & cons` is a guide that explores four different approaches to building integrations within an app, each with its own strengths and weaknesses. The factors to consider when building integrations include level of interaction, depth of integration, how it will change over time, complexity of the external system, number of customers, amount of data flowing through the integration, and number of external systems to integrate with. The guide then examines four options for building integrations: building from scratch, using a low-code/no-code integration builder, using an API aggregator, and leveraging pre-built infrastructure. Each option has its own pros and cons, and the guide aims to help engineering teams choose the best approach for their specific use case.