Alibaba Cloud · Compute

Captcha

Alibaba Cloud’s Captcha handles the unglamorous but critical task of distinguishing automated bots from genuine users. It acts as a gatekeeper for authentication flows, verifying human interaction to prevent spam and abuse. This service integrates directly into compute workflows, ensuring that login attempts and form submissions are legitimate before processing them further.

This solution suits teams already operating within the Alibaba Cloud ecosystem who need basic bot mitigation. The main friction point is the lack of a free tier, meaning every verification request incurs a cost. Since billing is strictly pay-as-you-go, there is no trial period to test its efficacy, which can be a hurdle for smaller projects or those evaluating cost efficiency against competitors.

• Free tier No
• Pricing Pay as you go
• Regions 8 · 4 continents
• SLA uptime 99.99%
• Compliance 10 certifications
• Provider health A