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"Subscribed for quick summaries of topics. Saves time. Googling and Youtube and collating info isn't convenient."

— RB

Technically

Making practical sense of software and AI.

AI
Recent Articles

What is Google doing with AI?

Inside Google's full-stack cloud bet, and how it differs from Microsoft and AWS.

How to use open-weight AI models

Picking a model, a harness, and where to run the thing.

What's going on with open-weight models?

How open-weight models went from a curiosity to great in 2 short years.

AI Reference

Training Dataset

Training datasets are the examples you show an AI model so it can learn to recognize patterns and make predictions.

Context Window

A context window is how much data an AI model can hold in memory at once.

Terms

Model weights

Model weights are the numbers a model learned during training — an astoundingly unsexy name for the single most important component of an AI model.

AI agent

An AI agent is a model plus a harness — the model decides what to do, and the harness gives it the tools and the loop to actually go do it.

All AI →
Analytics
Recent Articles

Databricks is apparently worth $100B. What do they even do?

What we should really be asking is “What does Databricks not do?”

Terms

Linear Regression

Linear Regression is an old school statistical method for predicting outcomes from a series of numbers.

A/B Testing and Experimentation

Experimentation is one of the ways that companies understand if their product efforts are working, and ipso facto, what they should be spending time on.

Companies
Databricks

Databricks

Databricks sells a data science and analytics platform built on top of an open source package called Apache Spark.

Alteryx

Alteryx

Alteryx is a group of tools that helps business teams get insights out of their data, without needing to write any code.

All Analytics →
Databases
Recent Articles

What's DuckDB?

Meet the world's friendliest database (allegedly).

Software Eng for Vibe Coders: Databases + Storage

Where your vibe coded app actually keeps its data, and how it might break when real users show up.

What does Turbopuffer do?

And what's going on in the category formerly known as vector databases?

Terms

ORM

An Object Relational Mapper is software that lets developers interact with their database in their programming language of choice – instead of SQL.

Blockchain

A blockchain is just another way to store data, exactly like a database.

Companies
Confluent

Confluent

Apache Kafka is a framework for streaming real time data, and Confluent offers Kafka as a managed service.

Algolia

Algolia

Algolia provides a set of tools that helps engineers build search functionality into their apps.

All Databases →
DevOps
Recent Articles

The Vibe Coder's Guide to Deployment

How your app gets off your laptop and onto the real internet, and what to do when a deploy breaks.

Software Eng for Vibe Coders: On Frontends + Backends

A new series to help non-engineers build products that can handle going viral.

What are code sandboxes?

Why coding agents need a safe place to play, just like we all do.

Terms

Branch

A branch is a specific version of your code repository.

Integration

Integrations are how two pieces of software talk to each other and share data

Companies
Cloudflare

Cloudflare

Cloudflare provides networking tools that help companies distribute their apps globally and securely.

Zapier

Zapier

Zapier helps business people make custom integrations between their favorite tools, without needing to write any code.

All DevOps →
Security
Recent Articles

Software Eng for Vibe Coders: Auth + Security

How to make sure anyone on the internet can't just delete your app's data, and other security considerations.

Terms

Tokenization

Tokenization is one of the ways that backends protect sensitive information, like credit cards or social security numbers.

VPN

A Virtual Private Network (VPN) lets you route your internet access through a specialized server that keeps your sensitive information private.

Companies
Snyk

Snyk

Snyk helps developers make sure that the code they're writing is secure.

Okta

Okta

Okta is an enterprise-focused identity provider: they take care of managing usernames, passwords, and permissions.

All Security →

"Technically has allowed me better bridge the gap between user problems and how our system works under the hood."

— Adelaide Hallowell

Latest

The Vibe Coder's Guide to Cloud + Scaling

The Vibe Coder's Guide to Cloud + Scaling

How to survive your app going viral.

Will RaphaelsonWill Raphaelson

Recent

What's DuckDB?Free

Meet the world's friendliest database (allegedly).

Garrett O'BrienGarrett O'Brien

The Vibe Coder's Guide to DeploymentFree

How your app gets off your laptop and onto the real internet, and what to do when a deploy breaks.

David KrevittDavid Krevitt

What is Google doing with AI?

Inside Google's full-stack cloud bet, and how it differs from Microsoft and AWS.

Paolo PerronePaolo Perrone

Software Eng for Vibe Coders: Auth + SecurityFree

How to make sure anyone on the internet can't just delete your app's data, and other security considerations.

David KrevittDavid Krevitt
All posts →
AI ReferenceSee all →

The guide to AI that you've been looking for. Click on any term for an in depth explanation.

EmbeddingsEmbeddings are how AI models turn words, images, or other data into mathematical coordinates that computers can actually work with.HallucinationAI hallucination is when AI models confidently generate information that's completely made up or wrong.Instructional Fine-tuningInstructional fine-tuning is how you turn a pre-trained AI model – knowledgeable, but useless – into a helpful assistant that actually answers your questions.RAGRetrieval Augmented Generation (RAG) is a way to make LLMs like GPT-4 more accurate and personalized to your specific data
How to use open-weight AI models

How to use open-weight AI models

Picking a model, a harness, and where to run the thing.

Will RaphaelsonWill Raphaelson
Software Eng for Vibe Coders: Databases + Storage

Software Eng for Vibe Coders: Databases + StorageFree

Where your vibe coded app actually keeps its data, and how it might break when real users show up.

David KrevittDavid Krevitt
What's going on with open-weight models?

What's going on with open-weight models?

How open-weight models went from a curiosity to great in 2 short years.

Will RaphaelsonWill Raphaelson
Software Eng for Vibe Coders: On Frontends + Backends

Software Eng for Vibe Coders: On Frontends + BackendsFree

A new series to help non-engineers build products that can handle going viral.

Justin GageJustin Gage
CompaniesSee all →

What their products actually do and why they're so valuable.

DatadogDatadog
Datadog is monitoring software - developers use it to get operational visibility into their servers and applications.
ElasticElastic
Elasticsearch is a popular open source database for storing and searching unstructured data.
StripeStripe
Stripe sells payments infrastructure for internet businesses: primarily, they help you bill your customers, process payments, and work with your payment data.
turbopufferturbopuffer
Turbopuffer is a search engine built on top of object storage (like AWS S3).
GlossarySee all →

Quick explanations of the concepts you see every day.

CompileCompiling just means translating one thing to another.DeployDeploying means updating the running version of your app with new codeNetworkingNetworking in software engineering refers to connecting two or more different things.Version controlVersion control lets you track and manage changes to your code in a more sophisticated way than you’re used to.

Video

Analyzing all 203 million trades on Kalshi

Analyzing all 203 million trades on Kalshi

Kalshi just raised a new round at an $11B valuation. How much revenue does their prediction market really make?

Sam SchneiderSam Schneider
Relationships are the moat

Relationships are the moat

What's the forward deployed engineer role, and why is every startup hiring them?

Sung Won ChungSung Won Chung
Technically on YouTube →

Contributors

Afzal JasaniAfzal JasaniChristy BieberChristy BieberDavid KrevittDavid KrevittGarrett O'BrienGarrett O'BrienJustin GageJustin GageKenny NingKenny NingMatt HendersonMatt HendersonPaolo PerronePaolo PerronePaul IusztinPaul IusztinSachin BennySachin BennySam SchneiderSam SchneiderSarah Krasnik BedellSarah Krasnik BedellSung Won ChungSung Won ChungTereza TizkovaTereza TizkovaWill RaphaelsonWill Raphaelson

Learning Tracks

Curated collections of foundational articles to guide you through the basics of getting more technical at work.

AI, it's not that complicated ↗

How to understand and work effectively with AI and ML models and products.

  • How do Large Language Models work?

    Breaking down what ChatGPT and others are doing under the hood

  • What's RLHF?

    How AI models learned to stop being weird and start being helpful.

  • What's GPT-3?

    GPT-3 is a Machine Learning model that generates text.

  • What’s a data science notebook?

    Data Science Notebooks help data teams explore data with code.

Analyzing Software Companies ↗

The products and business models of leading software companies.

  • Databricks is apparently worth $100B. What do they even do?

    What we should really be asking is “What does Databricks not do?”

  • What does Snowflake do?

    Snowflake sells a powerful cloud data warehouse for analytics and data science teams.

  • What does OpenAI do?

    OpenAI is the most popular provider of generative AI models like GPT-4.

  • What does dbt do?

    dbt (no capitals) is a tool for transforming and organizing data in your warehouse.

Building Software Products ↗

How to make positive contributions to your product roadmap.

  • The top 5 things PMs should know about engineering

    Engineering and code basics that can make you a better PM to work with.

  • What's code?

    Code is step by step directions, but for computers.

  • What's the internet?

    A network of computers all connected to each other and sharing information.

  • What's cloud?

    Cloud is how companies rent infrastructure over the internet.

From Spreadsheets to Databases ↗

You've outgrown Excel, but you've got to put that data somewhere besides your parents basement.

  • The Beginner's Guide to Databases

    There are 300+ databases; what do they all do?

  • SQL for the rest of us

    If you’re not a data scientist but you have questions, you want to know SQL.

  • The Excel User's Guide to Databases: Schemas

    Why that schema change is going to take your engineers two weeks.

  • The Excel User's Guide to Databases: Migrations

    Why your feature is held up by a migration and why this is actually good.

How AI Models Actually Work ↗

Under the hood of today's powerful AI models: how they're trained, implemented, and otherwise used.

  • What is Machine Learning?

    How computers learn patterns from data — and why it’s the foundation for everything from stock prediction to ChatGPT.

  • How do Large Language Models work?

    Breaking down what ChatGPT and others are doing under the hood

  • How do you train an AI model?

    A deep dive into how models like ChatGPT get built.

  • The beginner’s guide to AI model architectures

    Unlike an onion, hopefully these neural network layers won't make you cry.

Software Engineering for Vibe Coders ↗

Your AI wrote the app. This is everything that happens after — where it runs, how it stays up, and what breaks first when real users show up. A six-part series, made with our friends at Railway.

  • Software Eng for Vibe Coders: On Frontends + Backends

    A new series to help non-engineers build products that can handle going viral.

  • Software Eng for Vibe Coders: Auth + Security

    How to make sure anyone on the internet can't just delete your app's data, and other security considerations.

  • Software Eng for Vibe Coders: Databases + Storage

    Where your vibe coded app actually keeps its data, and how it might break when real users show up.

  • The Vibe Coder's Guide to Deployment

    How your app gets off your laptop and onto the real internet, and what to do when a deploy breaks.

Working With Data Teams ↗

How to make positive contributions when working with analytics and data science teams.

  • How do product analytics work?

    Product analytics is how teams instrument and analyze data about their product usage.

  • What your data team is using: the analytics stack

    A deep dive into all of the tools that data teams use to do their work.

  • SQL for the rest of us

    If you’re not a data scientist but you have questions, you want to know SQL.

  • What's the Modern Data Stack?

    The new set of tools data teams use to get their jobs done.

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— RB

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