¿Es una buena idea comprar las acciones de Microsoft (MSFT) antes de 2026?

The question of whether Microsoft (MSFT) is a compelling investment ahead of 2026 hinges on a delicate balance: its AI and cloud-driven growth potential versus its current valuation metrics. While the stock trades at a premium to industry averages, its strategic positioning in the AI and cloud markets suggests that the market may be pricing in a future of sustained dominance. Let's dissect the numbers and narratives to determine whether this premium is justified.

Valuation: A Premium, But Not Unreasonable

Microsoft's trailing P/E ratio of 33.91 as of December 2025 exceeds both its 10-year historical average of 31.62 and the Technology sector average of 30.92 according to Full Ratio. This suggests the stock is trading at a discount to its own past but at a premium to peers. However, context matters. According to Finviz, the PEG ratio of 1.82, while higher than the industry average of 1.92, indicates that Microsoft's earnings growth expectations are being priced in at a slightly more favorable multiple than the broader sector. This nuance is critical: a PEG above 1 typically signals overvaluation, but when it's closer to-or even below-the industry average, it implies the market is not overpaying for growth.

Moreover, Microsoft's forward P/E of 30.7, though higher than the industry's 24.71, appears less concerning when compared to its estimated fair P/E of 52.7x according to Simply Wall St. At just 64% of this theoretical fair value, the stock could be seen as undervalued relative to its long-term potential, particularly if its AI and cloud initiatives continue to outperform.

AI and Cloud: The Engines of Growth

Microsoft's Intelligent Cloud segment, led by Azure, is the cornerstone of its growth story. In Q1 FY 2026, Azure delivered a staggering 40% year-over-year revenue increase, with the broader Intelligent Cloud segment rising 28% according to Microsoft's Q1 earnings. This growth is fueled by surging demand for cloud infrastructure and AI capabilities. Azure AI Foundry, for instance, now serves 80,000 customers and offers access to over 11,000 models, cementing Microsoft's role as a critical infrastructure provider for enterprise AI.

The company's aggressive expansion plans are equally compelling. Microsoft aims to increase AI capacity by over 80% in FY 2026 and nearly double its data center footprint within two years according to Futurum Group. These investments are not speculative-they are strategic. The updated OpenAI partnership, which includes an incremental $250 billion in Azure services and extended IP rights, ensures a steady pipeline of innovation and demand. Meanwhile, tools like WorkIQ, Agent 365, and App Builder, unveiled at Ignite, position Microsoft as the go-to platform for secure, enterprise-grade AI deployment.

Competitive Positioning: A Fortress in the AI Era

Microsoft's competitive advantages are multifaceted. Its deep integration of AI into the Microsoft 365 ecosystem-now adopted by 90% of Fortune 500 companies-creates a sticky, cross-selling environment according to Futurum Group. The company's focus on "fungable" AI infrastructure, adaptable to evolving chip architectures and models, further insulates it from technological obsolescence.

Critics may argue that Amazon Web Services (AWS) and Alphabet's Google Cloud remain formidable rivals. However, Microsoft's unique blend of enterprise relationships, AI partnerships, and ecosystem breadth gives it an edge. For example, Azure's AI Foundry and OpenAI alignment provide a level of innovation that competitors struggle to match. Additionally, Microsoft's ability to generate robust cash flow-despite heavy capital expenditures-ensures it can sustain its aggressive investments without compromising financial health according to Josh Bersin.

Risks and Realities

No investment is without risk. Microsoft's valuation, while not egregious, does reflect high expectations. If AI adoption slows or cloud growth plateaus, the stock could face downward pressure. Furthermore, the company's capital expenditures-such as deploying NVIDIA GB300 clusters and expanding data centers-carry short-term costs that could weigh on margins. However, given Microsoft's $80 billion in annual operating cash flow, these expenditures are manageable and likely to yield long-term returns.

Conclusion: A Buy for the Long-Term Visionary

Microsoft's stock may appear expensive at first glance, but its valuation is justified by the scale and sustainability of its AI and cloud growth. The company is not just riding a trend-it is shaping the future of enterprise technology. For investors with a 3–5 year horizon, the current premium is a small price to pay for a business that is redefining its industry. While short-term volatility is possible, the fundamentals point to a stock that is undervalued relative to its long-term potential.