> For the complete documentation index, see [llms.txt](https://commsvr.gitbook.io/ooi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://commsvr.gitbook.io/ooi/introduction.md).

# Introduction

- [Introduction to Object-Oriented Internet](https://commsvr.gitbook.io/ooi/introduction/preface.md)
- [Introduction to Complex Data Processing](https://commsvr.gitbook.io/ooi/introduction/introduction2complexdataprocessing.md)
- [OPC Unified Architecture](https://commsvr.gitbook.io/ooi/introduction/opcunifiedarchitecture.md)
- [OPC UA Main Technology Features](https://commsvr.gitbook.io/ooi/introduction/opcuamaintechnologyfeatures.md)