The structure of web-based measurement and data acquisition system. Types of data acquisition module in distributed measurement and acquisition systems in different applications (industry, environmental protection, energy systems, appliances): smart sensors, RFID tagged objects, dedicated embedded measurement and data acquisition systems and computer measurement and data acquisition systems. Expansion of data acquisition modules with integrated web servers and web applications. The role and implementation of servers in distributed measurement and data acquisition systems. Client applications in distributed measurement and data acquisition systems. Stand-alone client applications and web client applications. Client devices: computers and general-purpose embedded systems dedicated to portable devices for general use. Cloud service integration in web-distributed measurement and acquisition systems. Programming and deployment of data acquisition modules. Programming and deployment of server modules. Programming and deployment of client modules. The acquisition of embedded web servers implemented in C programming language. Examples of DotNET, JAVA, PHP and Python embedded data acquisition web applications. Practical examples and servers in the middle tier web-distributed measurement and acquisition systems in different applications. Practical examples and client modules in web-based measurement acquisition systems in different applications. Subsystems for automatic calibration, testing and metrological support in web-based measurement acquisition systems.