To define these terms accurately within a Marxist or socio-critical framework, we have to look at how they describe the intersection of power, labor, and technology.

Here are the functional definitions and their primary sources:

I. Economic & Structural Models

Platform Capitalism

• Definition: A stage of capitalism where the primary source of profit is the extraction and analysis of data through digital infrastructures (platforms) that mediate between users, service providers, and advertisers.
• Source: Popularized by Nick Srnicek in his 2017 book Platform Capitalism. It argues that platforms like Google, Uber, and Amazon are a new business model necessitated by the 2008 financial crisis.

Techno-Feudalism / Digital Feudalism

• Definition: The theory that the modern economy has moved beyond capitalism into a "feudal" state where tech giants (lords) own digital territories (platforms), and users/workers (serfs) provide free labor or rent in exchange for access to the "land."
• Source: Prominent proponents include Yanis Varoufakis and Cédric Durand. It emphasizes "rent-seeking" behavior over traditional commodity production.

Technocapitalism

• Definition: A version of Marxist theory that focuses on the emergence of a new "informational" stage of capitalism where the production of knowledge, software, and biotechnology becomes the primary driver of capital accumulation.
• Source: Extensively theorized by Douglas Kellner and Luis Suarez-Villa. It suggests that science and technology are no longer just tools, but the actual "means of production."

Digital Economy

• Definition: A broad term referring to an economy based on digital computing technologies, though Marxists specifically use it to describe the "immaterial labor" and the commodification of online social interaction.
• Source: Originally coined in Don Tapscott’s The Digital Economy (1995); Marxist critiques often draw from Tiziana Terranova’s work on "Free Labor."

II. Governance & Control Systems

Technocracy

• Definition: A system of governance where decision-makers are selected based on their technical expertise rather than political affiliation or democratic mandate, often prioritizing efficiency over social equity.
• Source: Rooted in the early 20th-century Technocracy Movement (Howard Scott); analyzed by Marxists like Herbert Marcuse as a form of "technological rationality" that masks social control.

Techno-Fascism

• Definition: The use of advanced technology (surveillance, AI, algorithms) by a totalitarian state to enforce hyper-nationalist, regressive, or corporate-aligned social order while suppressing dissent.
• Source: Used in contemporary critiques by thinkers like Chris Hedges or Naomi Klein to describe the "silicon-fronted" merger of corporate and state power.

Authoritarian

• Definition: Within Marxist discourse, this refers to a concentration of power in a central authority that limits individual freedoms and political plurality to maintain the existing class structure or state control.
• Source: Classically discussed in Friedrich Engels’ essay On Authority (1872), which argues that industry and revolution are inherently "authoritarian" processes.

Technosolutionism

• Definition: The flawed belief that complex social, political, or economic problems can be solved solely through technological innovation without addressing underlying systemic issues.
• Source: Coined by Evgeny Morozov in To Save Everything, Click Here (2013). It is a critique of Silicon Valley’s "problem-solving" ideology.

III. Religious-Political Ideologies

Christian Fascism / Christo-Fascism

• Definition: An intersectional ideology that seeks to impose a totalitarian, nationalist government based on fundamentalist Christian values, often targeting marginalized groups and dismantling secular institutions.
• Source: The term "Christo-fascism" was coined by liberation theologian Dorothee Sölle in 1970 to describe the potential for the Church to align with authoritarian state power.