The consultancy service is very straight forward, it covers any aspect of building cloud web applications and is delivered via Skype call. It is customizable to the clients needs but generally covers architecture, building and deployment as well as things like efficient setup of developer environments.
The infrastructure service deliverable is a running cloud based system ready for web application deployment. There are lot of tweaks necessary over and above the vanilla Ubuntu install that your cloud provider offers, such as machine access, cloud provider environment setup, firewall rules, logs, 3rd party applications installation and configuration, user accounts, aliases, SSL certificates, cron jobs to name a few. This services covers all these and does it at 3 complexity levels depending on the size of your installation.
The maintenance service is aimed at maintenance and support of a web application infrastructure. It should be used for upgrades, improvements and customizations to an existing infrastructure.
The development service covers the development of Nodejs based web applications and could cover any type of application. I recommend doing some consultancy services sessions first to determine the application specifics before starting a development services engagement.
The writing service is aimed at internet publications that wish to create content for their websites. It could cover any aspects of web development, and might be in the form of a tutorial or perhaps an essay expressing an opinion on a particular aspect of modern technology. The details could be fleshed out via a short consultancy service.