The answer you need, with the code that runs.
Apex, LWC, Flow, integration and DevOps — written by certified Salesforce engineers, tested in real orgs. Plus six free tools you can point at your own org.
Point them at your own org
Six browser tools, no signup, nothing stored. Built by the same engineers who write the guides.
SOQL Query Builder
Build queries against your live org
Open tool →Apex Log Analyzer
Governor limits and execution timeline
Open tool →Schema ERD Viewer
Object relationships as a diagram
Open tool →JSON to Apex
Wrapper classes from JSON
Open tool →Permission Comparator
Diff two profiles field by field
Open tool →CRON Expression Builder
Schedule Apex with confidence
Open tool →The guides we keep updated
SOQL SOQL LIKE & NOT LIKE: Wildcards, Examples & Best Practices
Wildcards, NOT LIKE syntax, escaping, and bind-variable patterns with real Apex examples.
Admin Salesforce Role vs Profile: Differences & Best Practices
Profiles control what a user can do; roles control what they can see. The decision rules, simply.
DevOps What is a Salesforce Sandbox? Types, Uses & How to Choose
Compare Developer, Developer Pro, Partial Copy and Full sandboxes side-by-side.
Flow Salesforce Flow Best Practices: 12 Rules That Prevent 90% of Errors
Bulkification, trigger choice, fault paths, subflow design — the discipline that survives prod.
DevOps How to Refresh a Salesforce Sandbox (and Recover It If It Breaks)
Step-by-step refresh, what gets wiped, and the recovery moves when something goes wrong.
Apex WhatId vs WhoId in Salesforce: What They Mean & When to Use Each
WhoId points to people (Lead/Contact); WhatId points to records (Account/Opportunity).
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Agentforce & AISalesforce Winter '27 Marketing Cloud Updates for Developers
FlowWinter '27 Salesforce Flow Enhancements for Developers
AdminSalesforce Validation Rules: A Developer's Guide
AdminSalesforce Validation Rules: Sales & Service Examples
IntegrationSalesforce Jira Integration: Build vs. Buy Cost Analysis One post, one topic
Every post sits in exactly one topic, so the archive stays navigable.
Walk in knowing the answers
Question banks written from real Salesforce developer interviews, with the reasoning behind each answer.
Apex interview questions
Triggers, async, governor limits and the reasoning panels expect behind each answer.
Start practising → 02LWC interview questions
Lifecycle hooks, the wire service, events — what panels actually ask.
Start practising → 03Scenario rounds
Whiteboard-style design problems with worked solutions.
Start practising →
CODE SIERRATECHThe team behind these guides builds Salesforce for a living
Fixed-scope implementation, Agentforce, integration and managed services for SMBs — certified delivery from setup through training and go-live.