APIs enable software to communicate with each other. Free APIs are publicly accessible without requiring keys or authentication. Not all APIs are free, some may be limited or locked behind paywalls
EII enables unified view of data across entire organization. Converts heterogeneous data sources into single homogeneous source. Data can be stored in various formats including databases and spreadsheets
Google Sheets enables online spreadsheet management with automatic saving. Excel allows offline work while Sheets saves changes automatically. Sheets can be downloaded in various formats with PC backups
Microsoft Graph serves as the gateway to data and intelligence in Microsoft 365. The API provides access to data across Microsoft 365, Windows, and Enterprise Mobility. Connectors enable external data integration with Microsoft services. Data Connect facilitates secure delivery of Microsoft Graph data to Azure
FDW enables PostgreSQL to treat remote tables as local tables. SQL/MED specification introduced foreign tables in 2003. PostgreSQL 9.1 introduced FDW capabilities. postgres_fdw is PostgreSQL's official contrib extension module
Kepware connects legacy OT devices with software applications via OPC and proprietary protocols. Provides scalable unified architecture for combining drivers and multiple protocols. Offers data access for MES, SCADA, and big data analytics software. Optimizes communications and reduces network load through data conditioning